These are some early season jawfish. They are pretty small - somewhere around 2 inches in length. At this point in life, they have not developed in to male or females and they are just juveniles. As they grow older, they will mature into whichever sex is needed in the tank. For example, if you get two small ones from us, one would turn in to a male and one in to a female. They will then become a mated pair as they grow to maturity.
Yellowhead jawfish, Opistognathus aurifrons, are the Florida variety of this species, which is much prettier than the pearly head variety found in the rest of the Caribbean Yellowhead Jawfish are easy to care for and will eat most prepared foods. If you're hoping to get them to spawn, make sure that they are fed some sort of high quality conditioning food, and keep them on a long day (14hr) photoperiod. The adults may try to jump out of the tank on dark nights, so keep the tank covered at all times.
Please Note: Any new fish purchased from us or from a local pet store should to be quarantined. All fish from anywhere in the wild can be possible carriers of bacteria and protozoa that can lead to an infection in your system, so we always recommend that you use some sort of quarantine system prior to adding them to your system. If you have a fish only system and can medicate the whole system, you may not need a separate quarantine tank. If you have a reef system that cannot be medicated, a good ultraviolet sterilization system should prevent any kind of disease outbreak. We medicate our system for bacterial infections and protozoans, but because we don't always hold our fish for long periods of time, there is no way to be sure all the protozoan cysts have been killed. A little bit of prevention will save you lots of trouble down the line.