A new species of Nemacheilidae, Oxynoemacheilus freyhofi sp. nov. is described from the Roudbar R... more A new species of Nemacheilidae, Oxynoemacheilus freyhofi sp. nov. is described from the Roudbar River, a tributary of the Bakhtiyari River, Karoun River drainage, Iran. The species differs from its congeners in the combination of the following characters: dorsal fin with 10½ branched rays; forked caudal fin with equal size of lobes; slender and compressed caudal peduncle and complete lateral line; very small or absent median incision in upper lip; absence of suborbital groove in male. Oxynoemacheilus freyhofi is also distinguished from its congeners by a K2P distance of 4.5% to O. argyrogramma and 12.9% to O. bergianus.
A new species of Nemacheilidae, Oxynoemacheilus freyhofi sp. nov. is described from the Roudbar R... more A new species of Nemacheilidae, Oxynoemacheilus freyhofi sp. nov. is described from the Roudbar River, a tributary of the Bakhtiyari River, Karoun River drainage, Iran. The species differs from its congeners in the combination of the following characters: dorsal fin with 10½ branched rays; forked caudal fin with equal size of lobes; slender and compressed caudal peduncle and complete lateral line; very small or absent median incision in upper lip; absence of suborbital groove in male. Oxynoemacheilus freyhofi is also distinguished from its congeners by a K2P distance of 4.5% to O. argyrogramma and 12.9% to O. bergianus.
The Caspian Sea basin is one of the most important inland water basin of Iran having the most div... more The Caspian Sea basin is one of the most important inland water basin of Iran having the most diverse inland water fishes. The present study aimed to review the book entitled "Fish of Guilan'' by Keyvan Abbasi Ranjbar published in 2017. This book provides general and biological information of the reported fishes in Guilan Province that can be used as a reference and identification key by fishermen and researchers who are involved in aquaculture, fisheries and biology.
The present study reports length-weight relationship (LWR) of four fish species viz. Pennahia mac... more The present study reports length-weight relationship (LWR) of four fish species viz. Pennahia macrophtalmus, Epinephelus bleekeri, Acropoma joponicum and Trichiurus lepturus from the Oman Sea, Iran. A total of 880 specimens were collected from December 2016 to August 2017 by trawling. The LWR parameter b for the studied species was 2.68 to 3.07.
A new cave fish locality is reported for Iran, and the first true cave species is described from ... more A new cave fish locality is reported for Iran, and the first true cave species is described from the Tigris River drainage. Garra tashanensis , new species, from Tashan Cave, the Tigris River drainage in Iran, is distinguished from its congeners by the combination of characters, including lacking pigment and eyes, having a well-developed round mental disc, two pairs of barbels, a well-developed rostral cap, no obvious pores on lateral line, and rare scales on anterior body. Garra tashanensis sp. nov. furthers differs substantially in its DNA barcode from the subterranean congeners (K2P nearest-neighbor distance of 10.4% to G. lorestanensis and 11.8% to G. typhlops ).
To describe the osteological structure of the Garra rossica, ten specimens were collected from th... more To describe the osteological structure of the Garra rossica, ten specimens were collected from the Mashkid Basin, Iran. After fixation into 10% buffered formalin, they were cleared and stained for osteological examination. Then its detailed osteological description was provided and compared with the available congeners in the genus Garra and other cyprinids. Based on the results, some differences have been found in different bones, including neurocranium, upper and lower jaws, pectoral and pelvic girdles, dorsal, anal and caudal fins skeleton, and circumorbital series.
This research was conducted to study the length-weight and length-length relationships and condit... more This research was conducted to study the length-weight and length-length relationships and condition factor of six cyprinid fish species viz. Alburnus atropatena , Barbus lacerta , Capoeta capoeta , Carrasius gibelio , Romanogobio macropterus and Pseudorasbora parva from Zarrineh River (Urmia Lake basin, Iran). A total of 188 specimens ranging from 2.9 to 21.4cm in total length and 0.22 to 176g in total weight were collected. Based on the results, the values of b varied between 2.59 for C. capoeta , to 3.26 for A. atropatenae . All length-weight relationships were significant (P 0.98). All linear regressions were highly significant (P<0.05). The result of this study may be useful for biologists and fishery managers.
Sexual dimorphism is a phenomenon among some fish species such as the members of the genus Aphani... more Sexual dimorphism is a phenomenon among some fish species such as the members of the genus Aphanius. Among species with sexual dimorphism, morphological analysis needs to be performed separately. Hence, this investigation was carried out to determine suitable sex of Aphanius dispar for morphological studies. A total 180 specimens (male and female) were collected from populations of Sarbaz, Mehran and Shour rivers. Digital picture of speciments were taken from their left sides and then 17 landmark points cover their body shape were determined and digitized using tpsDig2 software. The data after GPA, were analyzed using PCA, CVA and MANOVA. The results revealed that studied population can be differitiated based on their body shap but between male and female of the Shour and Mehran rivers did not found significant different ib their separate analysis. Sexual dimorphism in the head and trunk seems to be a general feature in A. dispar. Based on the results in A. dispar, males can be sugg...
Transylvanian Review of Systematical and Ecological Research, 2020
The aim of this study was to investigate the global distribution of a non-indigenous and invasive... more The aim of this study was to investigate the global distribution of a non-indigenous and invasive fish species, the convict cichlid Amatitlania nigrofasciata, over time, with an emphasis on the inland waters of Iran. The results showed that the distribution range of the convict cichlid was initially based in Central America. Then, the distribution range of this species expanded to parts of North America. Finally, this fish species was introduced to other parts of the world such as Australia, Israel, Italy, Colombia, Germany, Peru, Slovakia, Japan, Indonesia, the Philippines, and Iran due to its extensive ability to spread. So far the presence of A. nigrofasciata has been reported in two domestic basins in Iran, namely Hormuz and Namak Lake. This study indicated that the distribution range of this species is not currently wide, but it is likely to expand towards the central plateau and southern parts of Iran.
Transylvanian Review of Systematical and Ecological Research
Sabanejewia is a member of the family Cobitidae found in Europe and Asia. In previous studies, S.... more Sabanejewia is a member of the family Cobitidae found in Europe and Asia. In previous studies, S. balcanica, S. caucasica, S. aurata and S. caspia were reported from Turkey. Of these S. aurata and S. caspia were reported from the Kura-Aras Basin. We examined morphological characters and molecular data of the Sabanejewia specimens from Turkish parts of the Kura-Aras river system to determine their taxonomic status. We found no differences between the Kura and Aras rivers’ populations in terms of morphology, but different populations showed a genetic distance of 0.1-1.9%. All the studied populations were identified as S. aurata. In addition, we could not find any evidence for the presence of S. caucasica and S. caspia in Turkey.
Petroleuciscus esfahani Coad and Bogutskaya, 2010 formerly believed to be an endemic species in e... more Petroleuciscus esfahani Coad and Bogutskaya, 2010 formerly believed to be an endemic species in endorheic Esfahan basin, was recorded for the first time in the exorheic Karun River drainage, Persian Gulf basin, Iran. This new record likely shows overlooking of this species in the Persian Gulf basin. In this study, distribution and possible dispersal mechanisms of this species were discussed and also provides its morphometric and meristic data based on the collected specimens.
This study investigated shape differences in two species of Cyprinion macrostomum from Tigris bas... more This study investigated shape differences in two species of Cyprinion macrostomum from Tigris basin and Cyprinion watsoni from Hormuz basin using discriminate function analysis. Coordinates of 17 external landmark points on 2D pictures were used for the analysis. There were significant differences of the two species. C. macrostomum have longer head length, snout length, preventral distance, head height, body height and length of pectoral fin bases than those of C. watsoni. The caudal peduncle length, caudal peduncle depth and anal fin base length in C. watsoni are longer than those of C. macrostomum, the pectoral fin in C. macrostomum was originated more posteriorly than that C. watsoni. Based on the geometric morphometrics differences, the two species can be well recognized and differentiated.
The relationship between cortisol and glucose was studied in two-year old farmed Siberian sturgeo... more The relationship between cortisol and glucose was studied in two-year old farmed Siberian sturgeon Acipenser baerii with a body weight of 340±30 g (mean ± SD) and total length of 45±1 cm from August to November 2017. Thirty-six individuals were randomly selected and stocked in some 3×300 L fiberglass tanks. Blood samples were collected monthly from the tagged fish. The mean cortisol in August, September, October and November were 4.7±0.9, 23.5±3.0, 6.3±0.9 and 7.4±0.9 ng mL–1 respectively whereas glucose concentrations were 44.6±0.4, 27.3±0.6, 49.2±0.7 and 48.5±0.7 mg dL–1 respectively indicating a significant increase in cortisol and decrease in glucose in September, may be due to the exposure to prolonged high temperature (26–28.5°C). Although it was expected to happen naturally due to hyperglycemia of cortisol but no such phenomena was detected. Our results suggest that the consumption of glucose for maintenance of homeostasis and physiological status is a mechanism against the n...
Fish larvae have several sensory systems that are functional at or soon after hatching and then a... more Fish larvae have several sensory systems that are functional at or soon after hatching and then are developed further during larval and juvenile stages. This study was conducted to investigate development of the eye in Rutilus kutum, based on histological and allometric growth analysis during early developmental stages up to 35 day post hatching with emphasis on retinal morphology. For this purpose, the histological sections were prepared and allometric growth pattern of the eye was calculated. The results showed that the most eye's structures along with the retina of the newly hatched larvae, as the inner sensory (photosensitive) tissue were completely differentiated. Allometric growth pattern of the eye diameter up to the inflexion point (7 dph) was somewhat positive and then it became negative. The results revealed that the Caspian kutum is dependence on visual capability as visual feeder during their larval period which itself explains completion of eye structures and the hi...
Early body shape changes of beluga sturgeon were studied using landmark-based geometric morphomet... more Early body shape changes of beluga sturgeon were studied using landmark-based geometric morphometric approach to recognize its allometric growth pattern. Sampling was done from hatching up to 50 days post hatching (DPH). Left side of specimens were photographed using digital camera and nine landmark points were digitized on two-dimensional images. Total length (TI) was measured using the software ImageJ. To study of the body shape changes during early development, the mean procrustes distance between all specimens of same age, for all age groups, was calculated. The scores of relative warp analysis (RW) were used as descriptors for the variation in shape. RW analysis revealed a sharp body shape change during early ontogeny on 18 DPH. Growth trajectory was computed by plotting RW against TL. The inflection point of body shape corresponds to a TL of 23.3 mm (18 DPH). Results showed that ontogenetic shape changes encompassed a pre-inflection shape changes, which included the elongation...
Cobitis keyvani is recently described from the sourhern Caspian Sea basin. Limited information is... more Cobitis keyvani is recently described from the sourhern Caspian Sea basin. Limited information is available about morphological features of C. keyvani, therefore this study was conducted to provide osteological characteristics and cranial myology of this species. For this purpose, nine specimens of C. keyvani were collected from the Talar River. The specimens were cleared and stained with alizarin red S and alcian blue for osteological examinations. The detailed skeletal structure and cranial muscles of C. keyvani were provided. Based on the results, C. keyvani can be distinguished from other members of the genus Cobitis by a contact between sphenotic and supraoccipital and a contact between pterosphenoid, parasphenoid, prootic and sphenotic in terms of osteological features.
A new species of Nemacheilidae, Oxynoemacheilus freyhofi sp. nov. is described from the Roudbar R... more A new species of Nemacheilidae, Oxynoemacheilus freyhofi sp. nov. is described from the Roudbar River, a tributary of the Bakhtiyari River, Karoun River drainage, Iran. The species differs from its congeners in the combination of the following characters: dorsal fin with 10½ branched rays; forked caudal fin with equal size of lobes; slender and compressed caudal peduncle and complete lateral line; very small or absent median incision in upper lip; absence of suborbital groove in male. Oxynoemacheilus freyhofi is also distinguished from its congeners by a K2P distance of 4.5% to O. argyrogramma and 12.9% to O. bergianus.
A new species of Nemacheilidae, Oxynoemacheilus freyhofi sp. nov. is described from the Roudbar R... more A new species of Nemacheilidae, Oxynoemacheilus freyhofi sp. nov. is described from the Roudbar River, a tributary of the Bakhtiyari River, Karoun River drainage, Iran. The species differs from its congeners in the combination of the following characters: dorsal fin with 10½ branched rays; forked caudal fin with equal size of lobes; slender and compressed caudal peduncle and complete lateral line; very small or absent median incision in upper lip; absence of suborbital groove in male. Oxynoemacheilus freyhofi is also distinguished from its congeners by a K2P distance of 4.5% to O. argyrogramma and 12.9% to O. bergianus.
The Caspian Sea basin is one of the most important inland water basin of Iran having the most div... more The Caspian Sea basin is one of the most important inland water basin of Iran having the most diverse inland water fishes. The present study aimed to review the book entitled "Fish of Guilan'' by Keyvan Abbasi Ranjbar published in 2017. This book provides general and biological information of the reported fishes in Guilan Province that can be used as a reference and identification key by fishermen and researchers who are involved in aquaculture, fisheries and biology.
The present study reports length-weight relationship (LWR) of four fish species viz. Pennahia mac... more The present study reports length-weight relationship (LWR) of four fish species viz. Pennahia macrophtalmus, Epinephelus bleekeri, Acropoma joponicum and Trichiurus lepturus from the Oman Sea, Iran. A total of 880 specimens were collected from December 2016 to August 2017 by trawling. The LWR parameter b for the studied species was 2.68 to 3.07.
A new cave fish locality is reported for Iran, and the first true cave species is described from ... more A new cave fish locality is reported for Iran, and the first true cave species is described from the Tigris River drainage. Garra tashanensis , new species, from Tashan Cave, the Tigris River drainage in Iran, is distinguished from its congeners by the combination of characters, including lacking pigment and eyes, having a well-developed round mental disc, two pairs of barbels, a well-developed rostral cap, no obvious pores on lateral line, and rare scales on anterior body. Garra tashanensis sp. nov. furthers differs substantially in its DNA barcode from the subterranean congeners (K2P nearest-neighbor distance of 10.4% to G. lorestanensis and 11.8% to G. typhlops ).
To describe the osteological structure of the Garra rossica, ten specimens were collected from th... more To describe the osteological structure of the Garra rossica, ten specimens were collected from the Mashkid Basin, Iran. After fixation into 10% buffered formalin, they were cleared and stained for osteological examination. Then its detailed osteological description was provided and compared with the available congeners in the genus Garra and other cyprinids. Based on the results, some differences have been found in different bones, including neurocranium, upper and lower jaws, pectoral and pelvic girdles, dorsal, anal and caudal fins skeleton, and circumorbital series.
This research was conducted to study the length-weight and length-length relationships and condit... more This research was conducted to study the length-weight and length-length relationships and condition factor of six cyprinid fish species viz. Alburnus atropatena , Barbus lacerta , Capoeta capoeta , Carrasius gibelio , Romanogobio macropterus and Pseudorasbora parva from Zarrineh River (Urmia Lake basin, Iran). A total of 188 specimens ranging from 2.9 to 21.4cm in total length and 0.22 to 176g in total weight were collected. Based on the results, the values of b varied between 2.59 for C. capoeta , to 3.26 for A. atropatenae . All length-weight relationships were significant (P 0.98). All linear regressions were highly significant (P<0.05). The result of this study may be useful for biologists and fishery managers.
Sexual dimorphism is a phenomenon among some fish species such as the members of the genus Aphani... more Sexual dimorphism is a phenomenon among some fish species such as the members of the genus Aphanius. Among species with sexual dimorphism, morphological analysis needs to be performed separately. Hence, this investigation was carried out to determine suitable sex of Aphanius dispar for morphological studies. A total 180 specimens (male and female) were collected from populations of Sarbaz, Mehran and Shour rivers. Digital picture of speciments were taken from their left sides and then 17 landmark points cover their body shape were determined and digitized using tpsDig2 software. The data after GPA, were analyzed using PCA, CVA and MANOVA. The results revealed that studied population can be differitiated based on their body shap but between male and female of the Shour and Mehran rivers did not found significant different ib their separate analysis. Sexual dimorphism in the head and trunk seems to be a general feature in A. dispar. Based on the results in A. dispar, males can be sugg...
Transylvanian Review of Systematical and Ecological Research, 2020
The aim of this study was to investigate the global distribution of a non-indigenous and invasive... more The aim of this study was to investigate the global distribution of a non-indigenous and invasive fish species, the convict cichlid Amatitlania nigrofasciata, over time, with an emphasis on the inland waters of Iran. The results showed that the distribution range of the convict cichlid was initially based in Central America. Then, the distribution range of this species expanded to parts of North America. Finally, this fish species was introduced to other parts of the world such as Australia, Israel, Italy, Colombia, Germany, Peru, Slovakia, Japan, Indonesia, the Philippines, and Iran due to its extensive ability to spread. So far the presence of A. nigrofasciata has been reported in two domestic basins in Iran, namely Hormuz and Namak Lake. This study indicated that the distribution range of this species is not currently wide, but it is likely to expand towards the central plateau and southern parts of Iran.
Transylvanian Review of Systematical and Ecological Research
Sabanejewia is a member of the family Cobitidae found in Europe and Asia. In previous studies, S.... more Sabanejewia is a member of the family Cobitidae found in Europe and Asia. In previous studies, S. balcanica, S. caucasica, S. aurata and S. caspia were reported from Turkey. Of these S. aurata and S. caspia were reported from the Kura-Aras Basin. We examined morphological characters and molecular data of the Sabanejewia specimens from Turkish parts of the Kura-Aras river system to determine their taxonomic status. We found no differences between the Kura and Aras rivers’ populations in terms of morphology, but different populations showed a genetic distance of 0.1-1.9%. All the studied populations were identified as S. aurata. In addition, we could not find any evidence for the presence of S. caucasica and S. caspia in Turkey.
Petroleuciscus esfahani Coad and Bogutskaya, 2010 formerly believed to be an endemic species in e... more Petroleuciscus esfahani Coad and Bogutskaya, 2010 formerly believed to be an endemic species in endorheic Esfahan basin, was recorded for the first time in the exorheic Karun River drainage, Persian Gulf basin, Iran. This new record likely shows overlooking of this species in the Persian Gulf basin. In this study, distribution and possible dispersal mechanisms of this species were discussed and also provides its morphometric and meristic data based on the collected specimens.
This study investigated shape differences in two species of Cyprinion macrostomum from Tigris bas... more This study investigated shape differences in two species of Cyprinion macrostomum from Tigris basin and Cyprinion watsoni from Hormuz basin using discriminate function analysis. Coordinates of 17 external landmark points on 2D pictures were used for the analysis. There were significant differences of the two species. C. macrostomum have longer head length, snout length, preventral distance, head height, body height and length of pectoral fin bases than those of C. watsoni. The caudal peduncle length, caudal peduncle depth and anal fin base length in C. watsoni are longer than those of C. macrostomum, the pectoral fin in C. macrostomum was originated more posteriorly than that C. watsoni. Based on the geometric morphometrics differences, the two species can be well recognized and differentiated.
The relationship between cortisol and glucose was studied in two-year old farmed Siberian sturgeo... more The relationship between cortisol and glucose was studied in two-year old farmed Siberian sturgeon Acipenser baerii with a body weight of 340±30 g (mean ± SD) and total length of 45±1 cm from August to November 2017. Thirty-six individuals were randomly selected and stocked in some 3×300 L fiberglass tanks. Blood samples were collected monthly from the tagged fish. The mean cortisol in August, September, October and November were 4.7±0.9, 23.5±3.0, 6.3±0.9 and 7.4±0.9 ng mL–1 respectively whereas glucose concentrations were 44.6±0.4, 27.3±0.6, 49.2±0.7 and 48.5±0.7 mg dL–1 respectively indicating a significant increase in cortisol and decrease in glucose in September, may be due to the exposure to prolonged high temperature (26–28.5°C). Although it was expected to happen naturally due to hyperglycemia of cortisol but no such phenomena was detected. Our results suggest that the consumption of glucose for maintenance of homeostasis and physiological status is a mechanism against the n...
Fish larvae have several sensory systems that are functional at or soon after hatching and then a... more Fish larvae have several sensory systems that are functional at or soon after hatching and then are developed further during larval and juvenile stages. This study was conducted to investigate development of the eye in Rutilus kutum, based on histological and allometric growth analysis during early developmental stages up to 35 day post hatching with emphasis on retinal morphology. For this purpose, the histological sections were prepared and allometric growth pattern of the eye was calculated. The results showed that the most eye's structures along with the retina of the newly hatched larvae, as the inner sensory (photosensitive) tissue were completely differentiated. Allometric growth pattern of the eye diameter up to the inflexion point (7 dph) was somewhat positive and then it became negative. The results revealed that the Caspian kutum is dependence on visual capability as visual feeder during their larval period which itself explains completion of eye structures and the hi...
Early body shape changes of beluga sturgeon were studied using landmark-based geometric morphomet... more Early body shape changes of beluga sturgeon were studied using landmark-based geometric morphometric approach to recognize its allometric growth pattern. Sampling was done from hatching up to 50 days post hatching (DPH). Left side of specimens were photographed using digital camera and nine landmark points were digitized on two-dimensional images. Total length (TI) was measured using the software ImageJ. To study of the body shape changes during early development, the mean procrustes distance between all specimens of same age, for all age groups, was calculated. The scores of relative warp analysis (RW) were used as descriptors for the variation in shape. RW analysis revealed a sharp body shape change during early ontogeny on 18 DPH. Growth trajectory was computed by plotting RW against TL. The inflection point of body shape corresponds to a TL of 23.3 mm (18 DPH). Results showed that ontogenetic shape changes encompassed a pre-inflection shape changes, which included the elongation...
Cobitis keyvani is recently described from the sourhern Caspian Sea basin. Limited information is... more Cobitis keyvani is recently described from the sourhern Caspian Sea basin. Limited information is available about morphological features of C. keyvani, therefore this study was conducted to provide osteological characteristics and cranial myology of this species. For this purpose, nine specimens of C. keyvani were collected from the Talar River. The specimens were cleared and stained with alizarin red S and alcian blue for osteological examinations. The detailed skeletal structure and cranial muscles of C. keyvani were provided. Based on the results, C. keyvani can be distinguished from other members of the genus Cobitis by a contact between sphenotic and supraoccipital and a contact between pterosphenoid, parasphenoid, prootic and sphenotic in terms of osteological features.
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