The little green glofish died last night. So I suspect the yellow one is doomed as well. If I can find the clove oil I'll take care of it, but I won't be getting to any stores until Tues. with the holiday Mon. The tank is too small for danios - 5 gallons - I know. We put them in there because they had been driving my guppies crazy in my 10 gallon. My daughter really wanted a betta - I told her she could earn it if she kept her room clean - but that never happened. So I let her get the glofish. Never again. (There's really no space in her room for a bigger tank.)