yeah black and golds are cool, aka golden cobra aka Channa aurantimaculata... not sure on their appetite tho, like i say diplogramma are the reds smaller better looking cousin, rare as heck though and max out about 2ft. red do get huge if kept properly, theres some vids on you tube of a member on here who had three at 32inches in a 9ft tank iirc... emperor snakeheads are cool and max out about 2ft, i love my wyckii but due to aggression its defo a love hate relationship... i had him in a 100g and apart from his digging and biting the hose he was pretty boring if im honest, they sit around alot. and no he is just picky, might be just my one but thats my experience. why not get an asian aro, they are real greddy and top out about 30inch in captivity!-) i know you said no p's but dillywoods has a real nice black piranha atm at 10inch and a gorgeous 12 inch rtgg... could do the rtgg and an already 2ft apurensis, the one i linked is sold but chris has it (from natures rare aquatics on aq classifieds) he lives in rochester and will deliver it to ya, he is asking 80 quid now tho!!! cheeky sod. many catfish keepers claim them to be the coolest catfish hands down, like a mini rtc personality wise and prehistoric looking from my research, ive been toying with the idea but scared he will eat my cichlids.