Krewetki w akwarium słodkowodnym

BREEDING SHRIMPS

Shrimps can breed in two different forms, but form of breed is not a trait saying about differences between kinds. Breeding of shrimps is highly conected with moulting - untill young shrimps are born female can't change her armour, that's why copulation takes places just after moultation.

LARWAE STADIUM (holometabolics) it is characteristic to almost all bigarms shrimps, for filtrating and some caridinas. Young ones after coming out of eggs go through few larvae stadiums before they become small shrimps. They get out of eggs as nauplitus which have 3 pairs of legs and swimm in open water eating plancton. Next segments come after next moultations - young ones during that time go through stadiums: protozoea, zoea and postlarva.

Coming out of eggs and evolving through first weeks of life they have to stay in salty water or sea water. Because most of them won't survive first stages of life because of extremaly small sizes (what makes them easy to be eaten), female just in case lays up to couple of thousand microscopic eggs. This kind of shrimps are hard to breed. In case of species being kept for consuming reasons (like Microbrachium rosenbergi) some methods of breeding were created to get maximum number of offspring. Unfortunatelly this methods are not possible to be used in our tanks. The best described shrimp, that breeds this way and is kept in aquariums is Caridina Japonica. As far as we know nobody successed to do it in Poland, but it's worth to try: http://www.ghostaquascape.republika.pl/AAmanosbreeding.htm

web-admin: Michał Kopystyński