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The ram cichlid (Mikrogeophagus ramirezi) is a species of freshwater fish endemic to the Orinoco River basin, in the savannahs of Venezuela and Colombia in South America. [3] The species has been examined in studies on fish behaviour [4] and is a popular aquarium fish, traded under a variety of common names, including ram, blue ram, German blue ram, Asian ram, butterfly cichlid, Ramirez's ...
Mikrogeophagus is a genus of cichlids native to the Llanos wetlands (Orinoco basin) and Guaporé–Mamoré river system (southern Amazon basin) in tropical South America. [2] They are dwarf cichlids that reach up to 6 cm (2.4 in) in standard length. [2] [3] They are popular with aquarists, especially M. ramirezi.
Although less popular than its close relative Mikrogeophagus ramirezi, the Bolivian ram remains a commonly encountered cichlid for the aquarium. [4] The species is also more tolerant of lower temperatures (22–26 °C (72–79 °F)) and a greater range of water conditions than M. ramirezi. [9]
Piscivorous cichlids eat other fish, fry, larvae, and eggs. Some species eat the offspring of mouthbrooders by head-ramming, wherein the hunter shoves its head into the mouth of a female to expel her young and eat them. [43] Molluscivorous cichlids have several hunting strategies amongst the varieties within the group.
There is a diverse range of cichilds in Lake Tanganyika in East Africa but the Tanganyikan cichlid tribes, Perissodini and Plecodus, feed on the scales of cichlids and other fishes. [21] The species of cichilds that exhibit scale eating behaviours live in deep water with very low levels of oxygen and have had to rapidly evolve to keep up with a ...
Ram feeding and suction feeding are on opposite sides of the feeding spectrum, where extreme ram feeding is when a predator swims over an immobile prey item with open jaws to engulf the prey. Extreme suction feeding is demonstrated by sit-and-wait predators that rely on rapid depression of the jaws to capture prey (e.g., frogfish, Antennariidae ).
Pterophyllum is a small genus of freshwater fish from the family Cichlidae known to most aquarists as angelfish.All Pterophyllum species originate from the Amazon Basin, Orinoco Basin and various rivers in the Guiana Shield in tropical South America.
A wild-morph acara in a home aquarium. The blue acara normally grows to around 13 cm (5.1 in), but can reach up to 16 cm (6.3 in). [3] The body is compact and stocky, while the fins are long and flowing, with a rounder head than on similar cichlids.