Populations have also been recorded in Panama and Trinidad and Tobago.
Widespread throughout much of South America, it's found in Venezuela, Guyana, Suriname, French Guiana, Ecuador, Peru, Brazil, Bolivia and Argentina. Take care when performing tank maintenance of this species, as its mouth is filled with sharp teeth, and the fish show no fear, often striking at any new object placed in the tank, such as siphon tubes or nets. As the Erythrinus grows it develops more colour and ceases this strategy. Male Rivulus are attracted to the mimic, only to meet with an untimely demise. Interestingly, in French Guiana, juvenile specimens are known to mimic the colour pattern of the female of a particular species of Rivulus killifish, which shares its habitat. It's also been known to travel over land for short distances to new habitats when seasonal waters begin to dry up. kessleri, but it's virtually unheard of in the hobby.Īll the variants have a modified swim bladder that acts as an accessory breathing organ, allowing the fish to survive in oxygen-deficient and stagnant waters. There is currently one other recognised species in the genus, E. Recent studies have highlighted genetic differences in these different populations, suggesting that Erythrinus erythrinus is actually a species complex, rather than a single species. There is a variant from Peru that has a bright orange belly. It is quite variable in colour and pattern depending on collection locality. Mature females are likely to be rounder in the belly than males.Ī species for the specialist, Erythrinus erythrinus is also known as the rainbow wolf fish or red hi-fin wolf fish. Smaller fish will be eaten and it's very intolerant of conspecifics, often fighting with them to the death. In order to see it act naturally, though, it's much better off when kept alone as a single specimen. Also, there is always the risk of introducing disease or parasites when feeding live fish.ĭespite its fearsome appearance, it can be combined with other similarly-sized species in a large tank. Many hobbyists feed predatory species such as this on large quantities of live 'feeder' fish, but there is no real benefit to this. It usually refuses dried foods, although some specimens have been known to accept them over time. In the aquarium its diet should consist of meaty fare such as earthworms, prawns, mussels and white fish such as lancefish. Anywhere in the range 5.5-7.5 is ok.įeeds on both insects and fish in nature. Very adaptable and unfussy regarding water chemistry. Make sure the cover is very tightly fitting as it can and will escape if given the opportunity. It can be kept in unplanted tanks, but at the very least provide lots of hiding places and refuges. In a brightly lit or sparsely decorated tank, it tends to spend a lot of its time hidden away. Ideally keep it in a heavily planted tank with plenty of floating vegetation, which will allow it to exhibit its natural behaviour. It is often found in very shallow water or lurkng among surface vegetation.Ĥ8" x 12" x 12" (120cm x 30cm x 30cm) - 108 litres. Small tributaries, swamps, marshes, pools, ditches and the margins of forest lakes. Peru, French Guiana, Venezuela, Trinidad and Tobago and Brazil. The fry is very aggressive and predatory and have to be sorted according to size to prevent them from eating and killing each other The fry grows very fast and can reach 30 cm / 1 foot in just over 6 months. They are very productive and one spawning can result in over 10 000 fry. (no vegetables) Hoplias malabaricus (Wolf Fish) are best feed at night.īreeding: Hoplias malabaricus (Wolf Fish) can be breed in large aquariums. Hoplias malabaricus (Wolf Fish) are nocturnal fish.įeeding: Hoplias malabaricus (Wolf Fish) are extremely easy to feed as they will try to eat anything that fits into their mouth. A dark bottom substrate can also be beneficial. Floating plants and dimmed lighting is preferred. The aquarium should be decorated with plenty of hiding places that are big enough for the fish.
Water parameters: Temperature 22-25☌ / 72-77✯ pH 6.5 8.0Īquarium setup: Hoplias malabaricus (Wolf Fish) needs due to their size and temperament large aquariums or even better ponds. Maximum size: +70 cm / +28 inches ( They only grow to 50 cm / 20 inches in the wild but grows larger then that in aquariums.)Ĭompany: Hoplias malabaricus (Wolf Fish) are due to its aggressive nature most suitable to be kept alone, they can however be kept with other large fishes that are able to stand their ground against this large aggressive species.
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