pleco vs. ADF

Pure speculation: the pleco comes from an environment where frogs and toads get big enough to be a threat to eggs and young, so he doesn't want the frog around. He wouldn't know that this frog stays small. Or, the frog has a thick slime coat, and the pleco is tasting the frog--not good.

Really, that's about the best I can come up with, but it is specualtion. I tried keeping bristlenose in with my ACF, and she killed them all within a few days. I've no idea why, since she did not eat them, and has never bothered the other fish. They might have been trying to suck on her, since she has a thick slime coat. You'll want to make sure this is not the case--a large pleco could easily cause serious harm to an ADF.

the pleco comes from an environment where frogs and toads get big enough to be a threat to eggs and young, so he doesn't want the frog around. He wouldn't know that this frog stays small

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thats a very good point. instinct is pretty strong in most fish, and thats probably a very good opinion on what the problem is, even if it is speculation.

Or, the frog has a thick slime coat, and the pleco is tasting the frog--not good

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This is quite likely too, my pleco decided to eat slime coat and some scales off of my goldfish. That did not make me too happy. and my goldfish wasnt amused much either. from what i understand, this makes it easier for parasites and bacteria to attack, because the fish doesnt have that protective coating.


i would encourage you to keep an eye on it if you dont want to separate them. as plecos get older/bigger, they start to eat more meat. i learned this the hard way when my pleco decided he wanted to eat all of my mystery snails. ADFs are smaller than my biggest snail was, so its quite possible that your pleco might have some ADFs for lunch.

good luck though.