I had 7 but unfortunatley one of my large dels jumped awhile back while i was out of town so i'm down to 6, 3 dels, 1 senegal, 1 endli, and 1 polli. i had another scare when my largest del swam straight into the bottom hole of a flower pot getting stick. after about 15minutes of panic he was free with just a few scratches. the polli is getting quite large and nips just about every other bichir in the tank. i got the endli early last year and ended up selling it soon after wards. i ended up buying it back in september. he's also putting on size quickly.