The P.
Volitans is the most common, and the quickest growing (actually its either P.
Russells, P. Miles, or P. Lunlunata - they are always misidentified at stores - and called
P. Volitans) ...it is a red/brown striped one with really showy pectoral fins. It
will grow to be about 15"- max, and will obtain this size in about 1.5
yr. Its growth is too quick for me, and will tax your tank size very
quickly, also they are too greedy as far as eating. In exchange for this they
are by far the most tolerant of poor water quality. As an aside there is a
great looking black striped volitan morph (actually the true P. Volitans) which has great
webbed extensions off its pec fins... its just like the red volitan as far as
growth. There is some confusion in what is truly a P. Volitans, and what
is a P. Miles or P. Russells. This is due to the P. Miles and Russells
form of lionfish looking a lot like P. Volitan...so in reality I have lumped P.
Volitan, P. Russells and P. Miles into the same category, (P. Miles has
a clear center portion of the pec fins, and it doesn't not have any facial
projections- it acts and grows just like the P.Volitans
Next are the dwarf lions, these are
smallish lions. The dwarf lion" is smallish, and has brown/reds as well(similar
coloration to a volitan), but the rays between the pectorals fins are webbed to half way
up, it stays relatively small, about 6-8" (although there are reports of them
reaching up to 10"), and grows slowly, a nice fish for a smaller tank.

Next is the fu man chu lionfish, its
kind of a weird lionfish ...but very cool. It doesn't swim but walks... it has almost a
spanish dancer like pec fins and two extensions off its mouth, which look like a fu man
chu mustache (hence the name). It also stays small- about 6-8", and grows slowly..I
like this lion because its has a weird undulating dorsal fin, but honestly it stays hidden
and immobile except for feeding time. I have found that Fu lions are actually slightly
mean..in that you can only have one Fu/tank, as they seem to be territorial.

The last lion is the radiata..its maroon
and black, with two horizontal stripes on its caudal peduncle (the area right before the
tail fin), it has pencil thin rays on its pec fins and no webbing. This fish gets
about10-12" but grows very slowly. I have seen this fish have reds, maroons, blacks,
greens....very beautiful, and the most expensive (about $60-90), also the least hardy of
the lions-it does not tolerate poor water quality, and it is very particular in its
feeding (it appears to
like shrimp better than fish)-10 times more difficult in caring for than
the volitans. You should be able to keep the lionfish together no problem, and they will
actually help each other hunt for food. A herding behavior. Remember that lionfish are
dawn/dusk hunters in the wild so there are not very active during the day, and on top of
that very lethargic...so expect these fish to be more active when hungry, but hiding and
"laying around" most of the time. It takes about 2-3weeks for the fish to adapt
to a feeding day cycle, however none of my lions were ever shy about eating.