Oh yah, sizes:
pearsei = 6.5-7"
snook = 10" (at least)
friedrichsthalii = 5.5"
managuense = 3.5"
The snook is probably the most attentive of the group. He's always watching me when I'm in the room, and waiting for me to drop in his favorite food, fd krill. He even recognizes the tub that its in now
. He gets all excited when he see's me pull it down from on top of the tank. He doesn't do that with the other foods I give them. 
pearsei = 6.5-7"
snook = 10" (at least)
friedrichsthalii = 5.5"
managuense = 3.5"
The snook is probably the most attentive of the group. He's always watching me when I'm in the room, and waiting for me to drop in his favorite food, fd krill. He even recognizes the tub that its in now
