Aquaculture can be extensive, semi-intensive, intensive and super-intensive. This paper describes super-intensive crustacean farming methods that could be applied in Croatia. Crab farming opportunities in Croatia depend on the choice of species and methods that can be used. Extensive farming methods are not suitable for our climate, so super-intensive breeding methods could be used. The aquaculture recirculation system (RAS) is a super-intensive method based on the recirculation of water between the production unit and the treatment module, controlling all water parameters, using artificial food, planting densities very high and the need for water and soil reduced. The systems are indoors, so they do not have to be near the sea or rivers, but can be inland. Recirculation systems for crab farming can be clear-water (CW) or biofloc (BF). In the CW system, mechanical and biological filtration is carried out and water quality and purity are strictly controlled. The conversion of potentially harmful organic substances into consumable biomass is encouraged in BF systems and there is no filtration, but the aeration must be extremely good. One of the newer methods in farming crabs is the use of Aquamimicry, that is, simulating the natural conditions of estuaries by creating zooplankton as supplementary food and enriching the water with beneficial bacteria. In Croatia, no attempt has yet been made to breed crabs for commercial purposes, but only breeding with the aim of restoring populations of native species. In addition, a number of licenses would have to be obtained to start a crab farm in Croatia, since breeding is only cost-effective for non-indigenous species, which would pose an additional challenge.