Worried about my male(not sure) subadult banded darter, I noticed that it has a bump on the anus, is it normal? Or it's a sign of intestinal disease? Or a internal parasite? Maybe it's a female and that's her egg tube?
it is doing well so far, eating brine shrimps and darting around.
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Edited by freemanyu, 15 July 2016 - 05:14 PM.