trying another new to me fish... again, not a lot of info out there... Myloplus arnoldi)

[Magnum Man]

this will be a third wheel to one of my angel / silver dollar pairings... still deciding which tank / pairing to add it to...
trying to read between the lines with little info out there, and one sellers fish picture with lots of nibbled fins, if these were over crowded, or if the fish has a tendency to nibble fins... since any other pictures out there the fins are always good, I suspect they were over crowded before the one got it's picture taken... Yellowfin Red Hook Silver Dollar (Myloplus arnoldi)

I'm kind of experimenting, as I'm thinking of adding a shoal of mixed dollars in with a shoal of discus in my 250 gallon, when it's ready for fish... so, if this gets too big down the road, or just isn't working out there will be an outlet to move it to

 

[FranciscoB]

Arnoldi get quite large. Beautiful fish. Not compatible with a shoal of discus, even in a large tank. Although the habitat of both type of fish changes dramatically seasonally, Discus are mainly from slow waters, while Arnoldi are rheophilous fish, with higher oxygen content. Also, Armoldi prefer lower temperature than discus.

 

[Magnum Man]

I've actually been rethinking doing discus... I've never had them, and are a bucket list fish... but the 250 will be a show piece, all the rest of my tanks are in the basement, so almost no one even knows I have aquariums, and there are just so many fish that can be put together for a display tank, if discus aren't included... it'll still be a while, before that tank is ready for fish yet...