Have my albino rainbow shark that has gotten far too aggressive recently so I had to move him to a 10g by himself which is no place for him to live and be happy. He is about 4 or 4.5 inches and prolly 2 or 3 years old. Would he be ok if I gave him to my sister who has a 55g with African cichlids? Their sizes range from 2 inches to 5 with most being about 3 to 4inches and 5 inches is the biggest one and she rearranges her tank frequently and there are plenty of hiding spots. I was curious because I really don't want to give him to petco and he get a bad home to live in. What is your opinions? I'm not too experienced with cichlids but I know ppl have mixed successfully before.