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Flowerhorn cichlids are ornamental aquarium fish noted for their vivid colors and the distinctively shaped heads for which they are named. Their head protuberance is formally called a nuchal hump. Like blood parrot cichlids, they are hybrids that exist in the wild only because of their release. Flowerhorns first emerged for sale on the aquarium ...
Nuptial tubercles on stone-roller, Campostoma anomalum. Nuptial tubercles or breeding tubercles (also called pearl organs or nuptial efflorescence) are noticeable skin roughness or horny nodules that form on male fish during breeding. They are made of keratin, the same material as hair, hooves, and fingernails.
Lyriocephalus scutatus. ( Linnaeus, 1758) Lryiocephalus is a genus of lizard within the agamid family, with the sole species Lryiocephalus scutatus. It is the largest agamid endemic to Sri Lanka [ 1] and lives in dense wet zone forests. [ 3] It is also called the hump-nosed lizard, hump snout lizard or the lyreshead lizard.
It has distinct markings with five to seven black vertical bars adorning a white or blue body and head and trailing fins with a distinct blue hue. The species also develops a nuchal hump that is more pronounced in older specimens. C. frontosa is a sexually monomorphic species, although the hump is occasionally more pronounced in males. These ...
Nosferatu pratinus. Nosferatu pratinus [1] (previously placed in the genus Herichthys ), [2] also known as green labridens or mojarra caracolera verde in Spanish, is a species of cichlid "endemic to the Rio el Salto,in the Rio Pánuco Basin in Mexico. The river runs through the Sierra La Colmena, where a series of pools and cascades called ...
Amphilophus citrinellus. Amphilophus citrinellus is a large cichlid fish endemic to the San Juan River and adjacent watersheds in Costa Rica and Nicaragua. In the aquarium trade A. citrinellus is often sold under the trade name of Midas cichlid. A. citrinellus are omnivorous and their diet consists of plant material, molluscs and smaller fish.
Texas cichlid. Wikimedia Commons has media related to Herichthys cyanoguttatus. The Texas cichlid ( Herichthys cyanoguttatus ), also known as the Rio Grande cichlid, is a freshwater fish of the cichlid family, and the only cichlid species that is native to the United States. It is found in the lower Rio Grande drainage in Texas near Brownsville ...
Lamprolgus congoensis is one of the more deep-bodied riverine species of Lamprolgus with the mean body depth being 25.2% of the standard length and the head is roughly one third of the standard length. Smaller fish have the forehead at a steeper angle than more mature fish. It is a sexually dimorphic species in which the males attain a larger ...