I used to keep apollo sharks, and they're lovely fish. The species I kept was
Luciosoma setigerum but I've seen that same fish listed in books as Luciosoma spilopleura and Luciosoma trinema, even though those are separate (and obviously different) species.
They don't get as big in even a 200 gallon tank as they would in the wild. About 15-20 cm seemed the maximum. They move very fast though, and are very adept jumpers. Yes, they're skittish, but not overly so, and they settle down quite easily. Eat anything, from pellets to small live foods. Will eat small fish, so choose tankmates with care. Absolutely must be kept in groups: they look stunning swimming in close formation. Their colours are amazing, and they have this lovely luminous, coppery, spot on their noses.
A red tail shark has
no chance of catching up with one... they're lightning fast. Catching them with a net is nearly impossible unless you have someone helping with another net to drive them into yours.
I kept mine with sturdy species, chocolate cichlids, dwarf snakeheads, plecs, and so on.
Cheers,
Neale