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Arnoldichthys spilopterus (BOULENGER, 1909)

African Red-eyed Tetra

March 13th, 2012 — 1:19pm

Endemic to Nigeria, where it occurs in the Ogun and lower Niger river systems. Despite its popularity in the aquarium hobby it’s relatively scarce in the wild and is known from less than 10 localities, all lying in an area where deforestation and pollution are uncontrolled and continue to occur extensively.

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Parachanna africana (STEINDACHNER, 1879)

March 13th, 2012 — 1:18pm

Following Bonou and Teugels (1985), P. africana can be distinguished from congeners by the following combination of characters: colour pattern unique, comprising a series of 8-11 dark, chevron-shaped markings extending along the body posterior to the pectoral fins; 19-24 scales in the transverse series; lateral line complete with 73-83 pored scales; 45-48 dorsal-fin rays 45-48; 32-35 anal-fin rays.

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