I was wondering if anyone has had similar issues to what I am seeing. I have a community tank with the following:
Size- 150gal
Filtration- Sump (Seamless Sump with Reservoir)
Levels- 7.2-7.5, all balanced and cycled
Fish- 3 Comet Goldfish (10-14in), 4 Dojo Loaches (14-16in for 2, 4in for 2), 2 Bristlenose Plecos
Substrate- Sand, large rocks
I am seeing both my large and small Dojo loaches begin to mouth on my large Goldfish (potentially for slime coat?), the smaller ones in particular I caught today picking at the gills of the Goldfish. The tank is long cycled, and I have started to run plants (quarantined and safe before use) in my sump to help with waste in the system. I always have an algae issue (currently adjusting time of lighting and plants to help) but I haven't seen any other issues show up.
Has anyone else had this issue where their Dojo's have begun to potentially feed on their Goldfish? Should I begin to setup a new home for them to separate? For reference, the only time I have observed this behavior in the past was when they began to mouth on a sick Oranda, but no illness has been seen with the current Goldfish at all.
Thank you all for your help.