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I have a chaetostoma cf. thomsoni and a chaetostoma milesi in a 25 gallon tank.

The dimensions are 24 in by 12 in.

They have been living happily in this tank for 5 or 6 months. Each one staying on his own end of the tank. Here recently the thomsoni has been venturing into the other end of the tank chasing off the milesi and also tormenting my corys to no end.

Is there any way to curb this bahavior? Each pleco has his own cave, the tank is planted quite densly(plastic plants). Would rearranging decorations help by breaking up established territory?

Or do I just have too many bottom dwelling fish for a tank with that size footprint. FYI I have 4 corys.

All comments welcome. Thanks in advance.

I have both African cichlids and catfish in numerous tanks together. I find that changing the decor around helps curb the aggressiveness in my tanks. I usually do it every couple of months.

I also feed them all very well

Well no luck with rearranging the decorations. My C. thomsoni is still bullying all the other bottom dwellers. Including the C. milesi.

Any ideas? Should one of the plecos be removed?

Is it just one of them dominating the other one, or is the dominating one causing damage to the other one?

If they are causing damage, it's time to separate them. If it's just a bit of chasing, let it be.

--
Mats

No damage being done to either of the fish. One just keeps the other run off of the substrate(up on the glass or on the filter intake). Both plecos still greedily eat their algae disc, so I guess everything will be alright. Thanks for the reassurance.