Red Devil, they stay relatively small compared to most knives...
Supposedly one sex can get upto 18Inches the other 12" although i highly doubt 18" in a tank.. the color is a dullish grey/green color...
Mine is not an adult..had it for 10 months, went from 5.5" to about 9"
Relatively peaceful, but will defend itself if someone gets too close...
Have small mouths, so they only eat bloodworms, brine shrimp, and TINY worms
I think theyre really cool personally.. mine loves its tube..even though my 3.5" THinbar kind of stole it.. Im very happy with this purchase..any more questions let me know!
Thanks for the compliments... and there faces are very comical!
PS LOVES swimming backwards!