[Ebook] Encyclopedia of Aquarium & Pond Fish – David Alderton (Photo by Max Gibbs)
[Ebook] Encyclopedia of Aquarium & Pond Fish – David Alderton (Photo by Max Gibbs)
[Ebook] Encyclopedia of Aquarium & Pond Fish – David Alderton (Photo by Max Gibbs)
Hemichromis (Jewel Cichlids) are monomorphic open-broodingsubstrate spawners, highly territorial, and with piscivorous tendencies. In the wild they occur ina variety of biotopes from westernforests to Egyptian oases, and dowell in fairly neutral water incaptivity. A single pair per tank(minimum 1 m/36 in, wellplanted) is the rule, and even thenthey may fight.
African Cichlids Dwarf species of the genera Pelvicachromis, Nanochromis, Manochromis, Limbochromis (cave brooders), Anomalomis (open brooder) are West African forest analogues South American dwarfs, and require similar living conditions (and can share a tank), although in the wild Nanochromis is found in rocky habitats. Strong sexual dimorphism is again the norm, with females generally the smaller and more colourful, and often responsible for initiating courtship.
The water of the East African lakes is generally hard and alkaline, although actual conditions vary from lake to lake. Lake Victoria is only moderately hard with a neutral to slightly alkaline pH; water clarity is poor and quality unexceptional.
These are small cichlids (up to 10 cm/4 in) from still or slow-moving streams and pools in rainforests and savannahs east of the Andes; their range, and consequently general biotope conditions, coincides to a large extent with= that of the larger species covered above. All are seasonal substrate brooders; most are strongly sexually dimorphic in size, coloration, and finnage, with the male the larger, showier fish.
In these regions cichlids are not the dominant predators and are rarely found in open water (where they would be easy prey for other fishes, birds, and reptiles) ; instead they occupy the margins of permanent bodies of water – lakes, rivers, and streams – where they can shelter among overhanging vegetation, roots, and fallen trees. Some are found beneath floating islands of plant debris. Most prefer still or slow-moving water, and do not appreciate bright lighting.
This group comprises several genera closely related to the South American genus Cichlasoma, and assigned to it until recently. The earlier name, and also Heros, is still commonly used. Their distribution encompasses lakes, rivers, and streams in not only Central America but also the southern United States and some Caribbean islands. The water in these regions is normally hard and alkaline (pH 7.5-8.0), and still or with a slow to moderate flow. The maintenance/breeding temperature is 24-27°C (75-80°F).
Qchlids (family Cichlidae) originate primarily in tropical America and Africa, with a few species in the Middle East and Asia. They are mainly freshwater fishes, though a few species require or tolerate brackish conditions. Size – adult Standard Length (SL) – ranges from 2 cm to 91 cm (3/4 in to 36 in) with a similar diversity in form, diet, and behaviour. Some species are very colourful and are thus attractive aquarium occupants. Many aquarists are, however, attracted by their interesting behaviour, character, and apparent intelligence; large specimens in particular can become genuine pets.
[Ebook] The New Guide to Aquarium Fish – A comprehensive and authoritative guide to tropical freshwater, brackish, and marine fishes – Mary Bailey – Gina Sandford