PINK VS BLACK CONVICTS

About convict cichlids :
A. nigrofasciata is a small, popular ornamental freshwater fish that is native to a number of countries in Central America. It occurs as an introduced species in the aquatic habitats of at least 10 countries, principally because of human-mediated translocation and release. Due to the popular ornamental status of A. nigrofasciata, it is rarely considered a “pest” species. Wide environmental tolerances, the ability to colonise disturbed habitats, trophic opportunism, parental care and fast growth rates all contribute to the likelihood of this species becoming invasive. Potential ecological impacts upon endemic fish fauna may include resource competition and predation of aquatic invertebrate communities as a whole. Research has suggested that A. nigrofasciata may be responsible for the displacement of native fishes in Mexico and Hawaii. Of particular note is that the species is aggressive, particularly when breeding as territories are established on the substrate and defended against all intruders.
nigrofasciata is native to a number of countries in Central America. These include Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua and Panama.
This species has been introduced into Australia, Italy, Japan, Mexico, Peru, the Philippines, Puerto Rico, Reunion and a number of states in the USA.
A population of A. nigrofasciata was first discovered in 1983 in Kibbuzim River in Israel, and observed in the river for about 17 years. It has not been found again since 2000 and seems to be extirpated now . This species is therefore considered absent in Israel. A new record of the species in the Middle East, however, now shows it to be present in Iran .
This species was also released into hot springs near Alberta, Canada, between 1950-1974 though introductions are considered to have failed
nigrofasciata inhabits flowing water ranging from small creeks and streams to the shallows of large, fast-flowing rivers. It prefers rocky habitats and inhabits cracks/crevices within this type of environment, or among roots and debris .
In Western Australia the species has been collected in a small, shallow urban lake . In Victoria, Australia the species occurs in the cooling ponds of the Hazelwood Power Station outside of its normal latitudinal range . Similarly, the species is abundant in a small stream in southern Tuscany (Fossa Calda) fed by hot springs .
Regards
Lito Loco 4 fish