hello just wanted some feed back on my stocking. well its a 75 gallon tank footprint is 5ft by 1.5ft and 16 in. high. i currently have 4 severums that are about 4 in. i am planning only on keeping one or two. 2 jurupari that are about 5 in. and 2 pike one is about 8in the other is about 6 in. not sure of what species am guessing its etheir Crenicichla lugubris or Crenicichla johanna. will it work in the long run so far so good i think the pikes and the jurupari are both males opposite side of the tank.