I am guessing the hi-fin is something like a yasha goby. My guess is they would get along just fine. From my experience most gobies/firefish get along fine with each other, even if they don't, they don't usually harm each other physically.
I am guessing the hi-fin is something like a yasha goby. My guess is they would get along just fine. From my experience most gobies/firefish get along fine with each other, even if they don't, they don't usually harm each other physically.