Happy Pets

Members of this family are bottom-dwelling fishes, and may be recognized as such by their flat ventral profile and underslung mouths, complete with barbels. In the aquarium, Loaches may be nocturnal, although some soon lose their shyness and venture around the tank during its illuminated periods. The fishes often make hiding places themselves by burrowing under rocks or into a tangle of aquarium plants. Most prefer to live in a community rather than as solitary specimens. The majority of Loaches have erectile spines, a defence weapon mainly, and these may catch in the aquarist’s net. There are many varieties to choose from, each with a differing colour pattern or body form, but they are all difficult to catch with a net. (more…)

Short-bodied Catfish

Brochis splendens (coeruleus) 76 mm 3 in. South America : slow-moving waters. Has a flat ventral profile and an arched back. The dorsal fin is long- based. The fins are brownish, and the body colour bronze/green. Very similar to the Corydoras genus but generally larger; the length of the dorsal fin is conclusive evidence. Temperature: 24^°C (75^°F). Diet: all foods; worms relished. Breeding: has been bred ; probably follows Corydoras pattern. (more…)

Lampeyed Panchax; LampeyeAplocheilichthys (formerly Micropanchax) macrophthalmus 30 mm 1 in. Nigeria, Cameroon : forest streams. The body is not cylindrical, but more laterally compressed. Its colour is a delicate blue, with a faint gold line running from the gill cover to the caudal fin. The caudal fin may have a yellow tinge, with red marks at the edge. The eyes are blue. Unlike some Killifishes, this species does well in hard, alkaline water. A shoaling upper water level species, perhaps too small for a community collection. Temperature: 23-26^°C (73-78^°F). Diet: live and dried foods. Breeding: lays eggs over period of days in plants or mops. Eggs hatch in two weeks and fry mature in six months. (more…)

The Egglaying Toothcarps include the so-called ‘annual’ fishes whose natural watery habitat completely dries up every year, thus killing the fishes. However, before this event occurs, the adult fishes lay their fertilized eggs in the mud of the stream bed, where they survive the rest of the dry season in a dormant state. The onset of the rainy season refills the stream bed and the eggs hatch. The fish then have to mature and spawn in their turn before the weather cycle is repeated. Aquarists have not been slow to take advantage of the fertilized eggs‘ ability to withstand semi-dehydration, and exchange fertile eggs through the post, often on a worldwide basis. (more…)

The young of these fishes develop inside the body of the female until they have absorbed the yolk-sac and are then released. Most livebearing fishes are easily sexed : male fishes have the anal fin modified into a rod-like structure called the gonopodium, through which the fertilizing spermatophores are introduced into the female. Gestation is approximately 3o days and broods may number from 20 to 200. It is possible for the females of some species to deliver successive broods without a repeat mating with the male. (more…)

Fishes in this family are often referred to as ‘labyrinth’ fishes because they have a labyrinthine organ in the head which allows them to breathe atmospheric air if necessary. Another distinguishing feature of this group is the breeding pattern: the majority of the fishes are bubblenest builders. The nests are made of saliva-coated bubbles blown by the male, into which the fertilized eggs are placed following the nuptial embrace beneath the nest. The fry are guarded and kept within the vicinity of the nest by the male. The female is best removed after spawning as the male may attack her. When breeding, care should be taken not to allow any cold draughts of air to pass acrossthe water surface as the fry may become chilled. As it is, a fairly high mortality rate occurs within the first two weeks of life with many species, and the ratio of males to females may be low. (more…)

The species in this group live in a wide range of natural habitats in rivers and lakes. They include many aquarium favourites, such as the Blue Acara, the Angelfish and the Oscar. Most are fairly large and may be aggressive at times.

Sheeps-head Acara; Flag Cichlid Aequidens curviceps 75 mm 3 in. S0uth America, Amazon basin : rivers. The grey-green body is slightly iridescent under reflected light. The scales have dark edges, the fins are flecked with blue-green and the d0rsal fin is blue-edged. A peaceful fish. Temperature: 24^°C (75^°F). Diet: all foods. Breeding: deposits eggs on an 0pen site. Parents 0ften eat their first spawning but, given a tank to themselves, usually prove t0 be go0d parents subsequently. (more…)

In their natural habitat the Clownfishes share a fascinating relationship with the Sea-anemone (Stoichactis, Discosoma and Radianthus species).

Normally, any fish venturing into the outspread tentacles of the Sea-anemone is fatally stung and consumed, but the Clownfish enjoys immunity (and safety from other larger fishes) as it swims in and out of its host. (more…)

Although related to the Clownfishes, these fishes have larger scales, and whereas the Clownfishes seek the relative safety of the Sea-anemone, the Damselfishes and Sergeant-Majors prefer to seek protection among the many coral branches of the reefs where they live. Some species have spawned in the aquarium. (more…)

Members of this family are deep-bodied and laterally compressed fishes. They are found mainly in the Indo-Pacific oceans, but one or two species occur in the Atlantic. They inhabit coral reefs, constantly pecking or scraping food from the surface and crevices of the coral heads. Their brilliant colours and startling patterns may be either a type of camouflage in the brightly lit world of the coral reef, or an aid in recognizing or communicating with fishes of the same species. The Angelfishes are distinguished from the Butterflyfishes by a spine at the bottom rear corner of the gill cover; many young Angelfishes have colours and markings that differ from those of the adult form. Angelfishes are territorial, and fishes of the same spebies will fight. (more…)