Every species

This is one of the so-called Tanganyikan Goby Cichlids. They occur only in the upper few feet of water around rocky shores, also known as the surge zone, where they scrape algae from the rocks with their specialised teeth. This habitat is typified by breaking waves and strong currents. They have a few adaptations allowing them to inhabit such an environment. The swim bladder is rendered useless to reduce their buoyancy. They also have a longand a laterally compressed body shape to allow them to ...

One of the most ubiquitous species in the hobby and several ornamental strains are available including 'long-finned', 'golden', 'albino', and 'super red', for which care is identical to that of the 'standard' fish. Unfortunately the degree of inbreeding amongst farm-bred stock has resulted in a situation whereby many of the fish available today are genetically weak and prone to disease or develop physical deformities.

This species only became available in the aquarium hobby during the early 21st century but has already achieved a measure of popularity since it's attractive, easy to maintain and usually quite cheaply-priced. You may see it on sale under various trade names including 'Vietnamese minnow', 'cardinal minnow', 'royal white cloud', 'dwarf cardinal' and others. We've obtained images of what is said to be a naturally-occurring form with extremely elong...

This fish was first collected in 2009 and limited numbers have been available in the aquarium trade. Though additional exports may be unlikely it's proven easy to breed in captivity and there's a fair chance it will become established in the hobby. It's sold under several names including T. sp. 'lemon' or 'yellow white cloud', and has also been misidentified as the congener T. thacbaensis, a valid species occurring much further north in Vietnam.

This beautiful little fish is not actually a goby, it's a member of the Eleotridae family, commonly known as sleepers or gudgeon. Members of this family lack the fused pectoral fins of true gobies. This species is one of the smallest and most attractive in the family, and makes an ideal resident of the planted community tank....

The genus Aphanius currently contains 22 species and subspecies which are thought to have derived from a common ancestor originally distributed around the periphery of the former Tethys Sea. These can be separated into two main phylogenetic groups usually referred to as the 'eastern' and 'western' clades by scientists and aquarists because they broadly correspond to those coastlines of the Tethys. The eastern clade comprises the species now found in the Arabian Peninsula and ...

Similar in lifestyle to Julidochromis species, Telmatochromis vittatus is ideal for the smaller Tanganyikan community and is also a good choice for the beginner. It can be distinguished from the similar T. brichardi and T. bifrenatus primarily by its larger size, smaller eyes and more rounded nose. Like other Lamprologines, Telmatochromis have fang-like, caniform teeth, which they use for scraping microrganisms from rock surfaces. On adult specimens these are clearly visible....

Puffer fish are so called as they have the ability to inflate their elastic stomachs with water or air. This is usually a response to some kind of threat, although in the aquarium many specimens appear to inflate themselves for no apparent reason. The fish becomes 2 or 3 times it's normal size, which makes the fish both big enough to scare away many potential predators, and difficult to swallow. Many parts of the body of puffers contain the deadly neurotoxin tetrodoxin. This is the same ...

Puffer fish are so called as they have the ability to inflate their elastic stomachs with water or air. This is usually a response to some kind of threat, although in the aquarium many specimens appear to inflate themselves for no apparent reason. The fish becomes 2 or 3 times its normal size, big enough to scare away many potential predators, or difficult to swallow. Puffers also have several other interesting adaptations. They are one of the few fish that can actually blink or close their ...

Puffer fish are so called as they have the ability to inflate their elastic stomachs with water or air. This is usually a response to some kind of threat, although in the aquarium many specimens appear to inflate themselves for no apparent reason. The fish becomes 2 or 3 times it's normal size, which makes the fish both big enough to scare away many potential predators, and difficult to swallow. Many parts of the body of puffers contain the deadly neurotoxin tetrodoxin. This is the same ...

Puffer fish are so called as they have the ability to inflate their elastic stomachs with water or air. This is usually a response to some kind of threat, although in the aquarium many specimens appear to inflate themselves for no apparent reason. The fish becomes 2 or 3 times its normal size, big enough to scare away many potential predators, or difficult to swallow. Puffers also have several other interesting adaptations. They are one of the few fish that can actually blink or close their ...

Puffer fish are so called as they have the ability to inflate their elastic stomachs with water or air. This is usually a response to some kind of threat, although in the aquarium many specimens appear to inflate themselves for no apparent reason. The fish becomes 2 or 3 times it's normal size, big enough to scare away many potential predators, or difficult to swallow. Puffers are also one of the few fish that can actually blink or close their eyes. Many parts of the body of puffers cont...

Puffer fish are so called as they have the ability to inflate their elastic stomachs with water or air. This is usually a response to some kind of threat, although in the aquarium many specimens appear to inflate themselves for no apparent reason. The fish becomes 2 or 3 times its normal size, big enough to scare away many potential predators, or difficult to swallow. Puffers also have several other interesting adaptations. They are one of the few fish that can actually blink or close their ...

Puffer fish are so called as they have the ability to inflate their elastic stomachs with water or air. This is usually a response to some kind of threat, although in the aquarium many specimens appear to inflate themselves for no apparent reason. The fish becomes 2 or 3 times its normal size, big enough to scare away many potential predators, or difficult to swallow. Puffers also have several other interesting adaptations. They are one of the few fish that can actually blink or close their ...

Puffer fish are so called as they have the ability to inflate their elastic stomachs with water or air. This is usually a response to some kind of threat, although in the aquarium many specimens appear to inflate themselves for no apparent reason. The fish becomes 2 or 3 times it's normal size, which makes the fish both big enough to scare away many potential predators, and difficult to swallow. Many parts of the body of puffers contain the deadly neurotoxin tetrodoxin. This is the same ...

Puffer fish are so called as they have the ability to inflate their elastic stomachs with water or air. This is usually a response to some kind of threat, although in the aquarium many specimens appear to inflate themselves for no apparent reason. The fish becomes 2 or 3 times it's normal size, which makes the fish both big enough to scare away many potential predators, and difficult to swallow. Many parts of the body of puffers contain the deadly neurotoxin tetrodoxin. This is the same ...

Tetraodon pustulatus

Puffer fish are so called as they have the ability to inflate their elastic stomachs with water or air. This is usually a response to some kind of threat, although in the aquarium many specimens appear to inflate themselves for no apparent reason. The fish becomes 2 or 3 times its normal size, big enough to scare away many potential predators, or difficult to swallow. Puffers also have several other interesting adaptations. They are one of the few fish that can actually blink or close their ...

There are currently six described species in the genus Thalassophryne, of which T. amazonica is the only freshwater representative. The others (T. nattereri, T. maculosa, T. megalops, T. montevidensis and T. punctata) are all estuarine animals distributed along the western Atlantic coastlines of Central and South America and inhabit brackish-to-marine waters. They are members of the family Batrachoididae or toadfishes, of which most are exclusively marine species. All batrachoidids are ambush pr...

There are only three species in the genus Thayeria, of which T. boehlkei is by far the most popular in the hobby. Of its congeners, it was the type species T. obliqua that was originally given the common name of "penguin" fish or tetra, although T. boehlkei is usually sold under the same name (we've also seen it on sale as "hockeystick" tetra). The two are easy to tell apart, as in T. boehlkei the thick black stripe extending from the lower lobe of the travels laterally ...