Erling Holm

The causes of and remedies for annoying background shadows on photographs taken using the techniq... more The causes of and remedies for annoying background shadows on photographs taken using the technique described by Emery and Winterbottom are outlined. A table is presented indicating exposures, flash positions, aquarium size, and required extension tubes for specimens of 15–420 mm total length. Three recently published fish photography techniques are briefly reviewed. Solutions to problems experienced with power sources, reflection, and depth of field in photographing small subjects are discussed.

FIGURE 37. Hemigrammus unilineatus. ROM 87556 in Annotated list and key to the stream fishes of Trinidad & Tobago

FIGURE 37. Hemigrammus unilineatus. ROM 87556, Rio Barro, Trinidad.

FIGURE 36. Roeboides dientonito. ROM 87553 in Annotated list and key to the stream fishes of Trinidad & Tobago

FIGURE 36. Roeboides dientonito. ROM 87553, Rio Barro, Trinidad.

FIGURE 32. Leporinus friderici, ROM 66240 114 in Annotated list and key to the stream fishes of Trinidad & Tobago

FIGURE 32. Leporinus friderici, ROM 66240 114 mm SL, Waini R., Guyana.

FIGURE 29. Poecilia boesemani, ROM 44741, 44 in Annotated list and key to the stream fishes of Trinidad & Tobago

FIGURE 29. Poecilia boesemani, ROM 44741, 44 mm SL, St. Joseph River, Trinidad.

FIGURE 28 in Annotated list and key to the stream fishes of Trinidad & Tobago

FIGURE 28. Poecilia (Acanthophacelus) reticulata, (a) male, Tobago, (b) female, Tobago. Photos co... more

FIGURE 27 in Annotated list and key to the stream fishes of Trinidad & Tobago

FIGURE 27. (a) Poecilia picta, male, ROM 88853, Trinidad, (b) Poecilia picta, female, ROM 88853, ... more

FIGURE 26 in Annotated list and key to the stream fishes of Trinidad & Tobago

FIGURE 26. Anablepsoides hartii, male, ROM 87528, 38 mm SL, Erin River, Trinidad.

FIGURE 25. Kryptolebias marmoratus, ROM 87580, 39 in Annotated list and key to the stream fishes of Trinidad & Tobago

FIGURE 25. Kryptolebias marmoratus, ROM 87580, 39 mm SL, unnamed coastal stream, Icacos, Trinidad.

FIGURE 23 in Annotated list and key to the stream fishes of Trinidad & Tobago

FIGURE 23. (a) Colomesus asellus, ROM 85408, 37.4 mm SL, Rupununi River, Guyana, (b) Colomesus ps... more

FIGURE 21. Hoplias malabaricus, ROM 88821, 91.6 in Annotated list and key to the stream fishes of Trinidad & Tobago

FIGURE 21. Hoplias malabaricus, ROM 88821, 91.6 mm SL, Chatham River, Trinidad.

FIGURE 60. Dormitator maculatus, ROM 44756, 137.0 in Annotated list and key to the stream fishes of Trinidad & Tobago

FIGURE 60. Dormitator maculatus, ROM 44756, 137.0 mm SL, Caroni Swamp, Trinidad.

FIGURE 59. Eleotris amblyopsis, ROM 66484, 49.0 in Annotated list and key to the stream fishes of Trinidad & Tobago

FIGURE 59. Eleotris amblyopsis, ROM 66484, 49.0 mm SL, Waini River, Guyana.

FIGURE 58. Eleotris pisonis, ROM 24318, 62 in Annotated list and key to the stream fishes of Trinidad & Tobago

FIGURE 58. Eleotris pisonis, ROM 24318, 62 mm SL, Bathsheba, Barbados.

FIGURE 56. Sicydium punctatum, ROM 87702, 90 in Annotated list and key to the stream fishes of Trinidad & Tobago

FIGURE 56. Sicydium punctatum, ROM 87702, 90 mm SL, Avocat River, Trinidad.

FIGURE 55. Ctenogobius fasciatus, ROM 61660, 29 in Annotated list and key to the stream fishes of Trinidad & Tobago

FIGURE 55. Ctenogobius fasciatus, ROM 61660, 29 mm SL, Cocorite Swamp, Trinidad.

First Canadian records of the Ghost Shiner (Notropis buchanani) and the Orangespotted Sunfish (Lepomis humilis)

Canadian field-naturalist, 1981

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First Record for Canada of the Rudd and notes on the Round Goby

FIGURE 34. Triportheus auritus, ROM 67298, 167 in Annotated list and key to the stream fishes of Trinidad & Tobago

FIGURE 34. Triportheus auritus, ROM 67298, 167 mm SL, Barama River, Guyana.

FIGURE 30. Poecilia vivipara, ROM 61654, 42 in Annotated list and key to the stream fishes of Trinidad & Tobago

FIGURE 30. Poecilia vivipara, ROM 61654, 42 mm SL, Cocorite Swamp, Trinidad.

Improved technique for fish specimen photography in the field

Canadian Journal of Zoology, 1989