I have a happy little community in my tank..... 5 black neons, 2 glowlight neons, 1 rainbow shark 2 fantails and I had a 3 cm pleco and now I dont. I don't even know where it's gone. The last time I saw it was a couple of weeks ago ( I can't alway see it). I have searched the tank from top to bottom and did a 360 degree search and it just isn't there. Very bizarre!!!! Could my shark have eaten it??