Ecsenius alleni, known commonly as the Allen's blenny,"Marine fishes of tropical Australia and South-East Asia A field guide for anglers and divers", by Gerald R. Allen, Roger Swainston, Jill Ruse. Published by Australian Museum, 1997 / is a species of combtooth blenny in the genus Ecsenius. It is found in coral reefs in the eastern Indian Ocean, specifically in western Australia. It can reach a maximum length of 3.4 centimetres. The blennies feed primarily off of plants and algae. The specific name honours the ichthyologist Gerald R. Allen.
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