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Aequidens Tetramerus
The saddle cichlid (''Aequidens tetramerus'') is a species of cichlid from the Tribe (biology), tribe Cichlasomatini, part of the subfamily Cichlasomatinae from South America. It is the type species of the genus ''Aequidens''. It is reasonably common in the aquarium trade. Description The saddle cichlid shows significant variation in colour and thus variation is geographic. In the western parts of its range, in Ecuador and Peru they develop striking red or orange colouration on the lower jaw, the head and the forward portion of the belly while Brazilian specimens are more of an overall grey or blue or green colouration. The males grow larger than the females and they usually grow extensions to the dorsal fin, dorsal, caudal fin, caudal and anal fins as they reach sexual maturity. In Spawn (biology), spawning condition the males are more brightly coloured than the females. The maximum recorded length of the saddle cichlid is . Distribution The saddle cichlid is the most widely dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Jakob Heckel
Johann Jakob Heckel (23 January 1790 – 1 March 1857) was an Austrian taxidermist, zoologist, and ichthyologist from Mannheim in the Electoral Palatinate. Life Though not a formally trained biologist, he worked his way up through the ranks to eventually become the director of the Fish Collection at the Naturhistorisches Museum in Vienna. For the most part, he was not a traveler or explorer like many of the scientists of the time, he remained in Vienna, where he studied and catalogued specimens sent to him from the field. Among those who brought specimens to him were Karl Alexander Hügel, Joseph Russegger and Theodor Kotschy — involving collection activities in Kashmir, the Middle East and northeastern Africa that greatly enriched the Vienna museum. Fish were his specialty and he worked with many of the greatest ichthyologists of his time including Cuvier, Valenciennes, Bonaparte, Müller, and Troschel. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
