Wow wth shed leave him wow
No pufferfish. Part of me says yeah go ahead let him do what he wants
But a good fish would be electric blue chiclid
No, electric blue cichlids-if it didn't eat the fish-would kill them anyway and that tank is WAY too small for one.
Problem is he would eat the smaller fish so well what I've found out is
Recently I had lots of tetra lots and they got ick and so I tryed a home remidy salt and heat problem is I put to much salt in and they were fine in brackish water(most of them surcome to the illness) and I still haven't done a water change so you could have a puffer and tetra and that way it saves an argument and a relationship
Not all puffers are brackish. And keeping freshwater fish long term in brackish is not healthy for the freshwater fish at all.
Also good combos are puffers and guppies (get all males tho unless you want babies plus males have more color) also mollys work they are the only fish other than salmon that can be in eather full salt and full fresh water.
Guppies and mollies plus pufferfish usually ends up with the puffer nipping them to death if you're not careful.
Schooling fish are quite beautiful to watch swil in formation back and forth so you could get other things like tiger barbs and neons
But if you go with tetras get neons, cardinal, glow lights, and hi fin tetra they all look great and will usually school together any thing else you can pm me