we after moving my fish around thinking it was the best setup. puting my dinosaur eel(Senegal bircher) with my needle nose fish and big pleco. everything looked ok. thinking the only problem would be the needle fish going after it but that wasn't the case. This was last night. this morning my wife looked in and the big pleco and birch were swiming the tank and needle wasn't going much but stay on top. Now i just checked my tank and the birch is missing. pulled everything up and no birch. then went for the filer. poop found small peices of the birch in there. so my next question would be what ate the birch? looks like the pleco did from everything i've seen. But i never knew big pleco would eat other fish. and if it did how come so much of a mess. If it was the needle wouldn't there be some sign of the needle eating. (like a bump or something on him) please give me some insite