Jurassic Aquatics is a great place.
Another place you might check out is Aquatic Daycare.
http://aquaticdaycare.com/current-stock-list The owner, Jason, is a friend of mine (we worked at the same LFS long ago) and is a really nice guy. They are local to me, but they ship all over. This is what they currently have:
Bichirs:
Polypterus Bichir Sp. Faranah Lap 15-17” $175.00
Polypterus Bichir sp "Faranah"(Dabola type) 20” $350.00 Special
Polypterus Bichir Bichir 18-20” $400
Polypterus Endlicheri Faranah 14” $120
Polypterus Endlicheri Congicus 12-13” $125.00
Polypterus Weeksii 7-8” $60.00 Sold Out
Polypterus Bichir sp. "Koliba" 13-14” $140.00
Polypterus Endlicheri endlicheri "Black Volta " 6-7” $75.00 10” $120.00
Polypterus Endlicheri “Milo River” 12” $150 Sold Out
Polypterus Mokelembembe 5-6” $80.00 8” $110.00
Polypterus Nigerian Lap 10-12” $55.00
Polypterus Ornates 6-7” $55.00
Polypterus Delhezi -7-9” $59.99
Polypterus Palmas Palmas 7-8” $55.00
Polypterus Teugelsi 3” $39.99 Sold Out
Polypterus Retropinnis 3-4” $39.99 1 Left
Polypterus Buetikoferi 3-3.75” $29.99