Yes. my dad keeps saying Rose will "die of lonliness" and needs to be with "friends" but i saw the guppies nipping on Rose's scales and tail and fins and stuff. also, I already asked for a new tank and my dad said "your fish will be completely fine" even though I yelled "THEY ARE NIPPING TAILS!"
Does your dad keep putting Rose back in? Ask him if you can at least keep Rose separate. Explain to your dad that King Dedede will kill her if they are kept together. That is a lot of fish in the 5gal and you will need to do at least twice weekly water changes to keep the water from becoming toxic. The problem is the tank is too small so King Dedede might even try to kill the tetras. And the tetras and danios will surely nip at his fins. If you can, ask him if you can get another small tank for King Dedede. Try to explain that he can't be with the other fish.
my dad kept buying fish (even though I said I couldn't handle all the fish!) and a few days ago i counted 4 danios, 3 tetras, 2 guppies and King Dedede with a female betta named Rose I've been trying to seperate from King Dedede. I have the 1g but my dad keeps putting the fish back in the 5g no matter how many times I put some fish in the 1g. I heard from Sena 11 fish in a 5g is too much and ammonia will build up fast and might result in a disease outbreak like ick or columnaris or both and I have been trying to sell some fish but I can't sneak out of the house because my parents catch me every time (look at the thread "meet rose the betta i was forced to take care of" @_@'