How do I ask my teacher if I can adopt her fish? The bowl is on a dark shelf with little water. It has rocks as substrate and fake plants. The betta is dull, it barely moves, it has pop eye and fin rot. I wouldn't be surprised if it was malnourished. I'm planning on getting a 5.5 gallon tank for it but I don't know how to ask. She has told me that she is not doing a very good job of taking care of the fish and hasn't done anything to fix it. I very much want to take care of it for her but I don't want to offend her by asking for it rudely. I'd like her to continue to like me. Anyway, please help! The fish is going to die soon.