Hi, I recently got my fish obsessed son a new 46gallon tank. The tank is 36" L x 12"W x 24"H. I thought we would do some african cichlids. Looking for some suggestions as to how many we should put in there. Some of what we are thinking of are peacocks, yellow labs, acei, and maybe a type of synodontis. We also thought about a redtail shark. Any suggestions or ideas would be appreciated. Thank you!