thanks guys, i went back to the store today and found they still had one more in that tank. i purchased it as well. upon arriving home i realized that one of the other two had hopped up and out of their isolation tank and became an Oscar snack
Sorry to hear that, but not surprised. Bichirs are escape artist, and it is recommended that every gap be covered and weighed down. If there's any doubt that they might escape, they probably will.
right now they are in thier own 5 gallon with a glass lid that i setup for them. i will just move them up through my other tanks as they grow. i really miss that third one though... i wanted my little trio