Ok Jonathan sent me a PM about some schooling fish so lets get a discussion going (your PM box if full FYI :lol: );
"My basic needs are:
1. fish that do not exceed 3" (I would prefer < 2.5") but not too small so that they do not get snatched and fed to the anemones.
2. A true reef-safe fish;
3. A true schooling cardinalfish.
Some cardinals are very shy and like to hide, and I am looking for serious shoaling energy. My target is 30 - 40 fish and I understand that many of them don't ship well.
If you thumb through my thread on RF, you will see pictures and links.
Species:
Apogon parvulus
Apogon dispar"
So on to my thoughts... first off, I think pajama cardinals are ugly and gross. I can't justify that feeling or find a reason for it but I just do SO I explore some weird cardinals.
First thing to note, is that cardinals are often as finicky as green chromis for a LFS ie: if they're poorly collected, they will all die no matter what you do. I've had batches of 10-20 cardinals eat and drop off day by day, I've had them dead in bag ALOT, and I've had entire groups survive. They are a delicate fish that I believe need to be in bag for as little time as possible. That being said, they normally eat frozen food readily and try to get them eating some kind of fat and vitamin supplement as quickly as possible.
My personal experience has been limited to the common cardinals (pajama, bangaii) and a couple of the not so common (Flame, orange striped, black striped, blue eye or glass or longfin). Looking at a wholesale list, they have black striped and flame cardinals available today but in small quantities, so getting large cardinal schools is hard.
Further looking into the cardinals that have come through this particular wholesaler, I see 4 species;
Apogon, Pempheris, Pterapogon, and Sphaeramia.
For the sake of this discussion, the cardinals we're focusing on are in the Apogon species. Now my experience says that any apogon cardinalfish will not attack another member of its genus (ie: I've mixed flames, blacks, and oranges in a holding tank with no fighting).
I don't see parvulus or dispar having ever come through here and I imagine that they come from somewhere near Japan (ie: we don't get that many in America). I also see two different examples of cardinals coming in as Apogon sp. (which is REALLY helpful when looking for a specific fish :mad2: )
The varietals I do see are (again no idea on how many they collect at a time or anything really except the few species fore mentioned):
Flame Apogon maculatus
Longspine Apogon leptacanthus
Orange Lined Apogon sp.
Striped Apogon sp.
Black Striped Apogon nigrofasciatus
Red Stop Lite Apogon crassiceps
Orange Lined Apogon cyanosoma
Apogon, Bandtail, Black Spot Apogon taeniatus
Yellow Tail Apogon sp Philippines
Red Tail Apogon sp Philippines
So I guess with my limited experience with Apogon cardinals, I would suggest that you either get a large school combining the different species or go with the more common but incredibly powerful school of glass cardinals. Glass cardinals (leptacanthus) always stick close to each other and are a really great addition for some serious schooling fish.
Hope that helps,
John