Ok i went to my LFS today 2 do 2 things...
1 Get rid of Yellow Lab / Comon Pleco
2 get an algea eating fish (i got a farowella cat)
well they had glass knife fish (4) all about 4-6 inches. They have small mouths and my mom (the impulsive buyer) liked them... the guy said it wasnt a fish eater mostly blood worms and that it didnt get much bigger... i warned her but she bought it... a
Cherry Barb.... and 2 silver hatchet fish for an already over stocked 29 gallon... my question is if i got ride of my bichirs could i fit this knife fish and maybe 1 more (one of the few social knife fish that enjoy groups) in my 55 gallon... the 29 is too bare and 2 well lit to house this fish but i would like to try and keep this knife fish (i like knifes better then bichirs) i might even be persuaded to let go (trade in to lfs) the pictis as i really enjoy the way this knife looks and my setup is for a black ghost knife in mind actually.
The 29 it is currently in is stocked with zebra's guppies, mollies, hatchet fish, 1 comon pleco, 1 glass knife, 5 emerald green cories, 1 peperd cory, 1 albino cory (unknown type) (all the coriies school together) serpea tetra's, 3 silver hatchet fish, and a blueberry (dyed but i cant stop her from getting them) tetra. (only the zebra's are in a suffice school... besides the reproducing guppies)
if these sites are correct i should be fine with getting them and replacing my bichirs with them.
http://www.fishinthe.net/html/fishgu...FC=97&nl=&nt=1 http://answers.yahoo.com/question/in...2131005AA0PIpZ http://www.fishchannel.com/freshwate...fish-knowledge 
