Haha, thanks everyone.~ cx
Just thought I should drop in and update.
My dad isn't budging, unfortunately, and my friend is running short on time to give them away. With my permission (I was the only one interested in all six, haha) he started giving the fish away separately and only including the decorations and sand from their part of the tank. So far Sunny, Starburst and Milo have all been rehomed (and there's someone incredibly interested in Jinx) and my friend mentioned that after checking up on the fish the new owners all have at least a 2.5 gallon for them (and only Milo remains unheated, and his new owner I'm also friends with and he plans on getting a heater for him within the next week), so that's good. After the tank is emptied, he's selling it to his cousin.
However, one good thing might have come from this - he knows how much I wanted his fish, so he's offered to give me his favorite, Royal, who is housed in a separate 5 gallon. Royal's gorgeous - it's not hard to see why he's his favorite. He's a beautiful, iridescent purple (similar to this shade: click
) halfmoon doubletail, with a clear butterfly pattern on his tail(s) that's edged with a light pink and he has the cutest little silver patch around his mouth. My friend was intending on taking him with him - however it's already a bit hard taking his porcupine puffer and he said that if I really wanted him I can take him off his hands, tank and all. My dad seems pretty against this, too (although slightly less than the bigger tank), but Royal's not really an emergency situation and I won't feel quite as bad not taking him. Still, he's gorgeous, and I'd love to have him around <3