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FACTSHEETS: November 1999 - no. 041

Parotocinclus maculicauda (Steindachner, 1877)


his is an inoffensive little catfish that does well in an aquaria of similar sized fishes, it has also become a popular addition to the tanks of U.K. aquarists. It is a member of the Loricariidae family and is in the sub-family of Hypoptopomatinae which also includes the Hypoptopoma and Otocinclus genera. To differentiate between Parotocinclus and Otocinclus is comparatively easy as the former has an adipose fin while the latter does not. .

 

Parotocinclus maculicauda

Parotocinclus maculicauda

 

There are approximately 35 described species of Parotocinclus (2022) from Brazil, with Dr.Garavello reviewing this genus in 1977 in the Arquivos de Zoologia, Sâo Paulo in a paper 'Systematics and Geographical distributions of the genus Parotocinclus'. He also stated that the males have a genital papilla and as such it is a good way to sex out this genus.

It is a favourite here in the U.K on the show circuit as you can purchase this fish at nearly show size, and with its good deportment and colour it can do very well.

Below you can see the difference concerning the lack of an adipose fin in the Otocinclus genera to differentiate it from Parotocinclus.

 

 

Parotocinclus=Otocinclus

Parotocinclus & Otocinclus

 

Parotocinclus maculicauda in good condition can possess a golden body colouration with brown blotches, especially along the lateral line, and a blotch on the caudal peduncle ( where the caudal fin meets the fleshy part of the body) hence the latin name of maculicauda ( spot on caudal peduncle) The leading ray to the dorsal, pectoral and caudal fins is red with brown banding.

There have been spawning reports on some members of this genus and for one such report you can go to article 20 in the breeding article section of ScotCat.

 

Common Name

False Sucker

Synonyms

Otocinclus maculicauda, Parotocinclus steindachneri

Family

Loricariidae

Subfamily

Hypoptopomatinae

Distribution:

South America: Brazil, coastal rivers between Santa Catarina and Rio de Janeiro.

Size

5.5cm (2¼ins)

Temp.

20-24ºC ( 67-75°f)

p.H.

6.5-7.0.

Characteristics

Dorsal 1/7; Anal 1/5; Pectorals; 1/6; Ventrals 1/5; 24 bony scutes in a lateral series.

Colouration

Grey-green to yellow-green, also grey-brown, with irregular blotches on the flanks which may unite into vague-edged longitudinal bands. Underside pale yellow to grey. A large dark blotch at the root of the tail, which may be more or less extended into the lower caudal lobe, is characteristic of this species. The leading ray to the dorsal, pectoral and caudal fins is red with brown banding.

Aquarium Care & Compatibility

Keeping this species is not too difficult as long as you can keep the water clean and don't let the p.H. drop too much. Keep up the water changes and try to keep them in the lower tropical temperatures as they do come from the southern parts of Brazil.

Reproduction

Usually lays its eggs on vegetation in the aquarium (see article 20).

Diet

They are omnivorous (vegetable and meat diet) and will eat lettuce, cucumber, courgette (zucchini) and also white and grindal worm, frozen bloodworm, flake and tablet food.

Etymology

Parotocinclus: Greek, para in the side of + greek, ous, otis = ear + Greek, kygklos, ou = a fish.
maculicauda: Spotted tail.

Glossary of Terms

Adipose fin: Fleshy finlike projection without rays, behind the rayed dorsal fin.
Anal fin: The median, unpaired, ventrally located fin that lies behind the anus, usually on the posterior half of the fish.
Bony scutes: Bony covering.
Caudal fin: The tail.
Caudal peduncle: The narrow part of a fish's body to which the caudal or tail fin is attached.
Dorsal fin: The primary rayed fin(s) on top of the body.
Genital papilla: A small, fleshy tube behind the anus in some fishes, from which the sperm or eggs are released; the sex of a fish often can be determined by the shape of its papilla.
Lateral line: A sensory line, along the sides of the body.
Pectorals: The paired fins just behind the head.
Ventrals: The paired fins, between the pectorals and the anal fins.

References

Garavello, J.C. (1977) Systematics and geographical distribution of the genus Parotocinlcus Eigenmann & Eigenmann, 1889 (Ostariophysi, Loricariidae). Arq. Zool. S. Paulo 28 (4): 1-37.
Sands, David: Catfishes of the World vol 4, 1984.
Sterba, Gunther: Freshwater Fishes of the World vol.2. 1973.

Photo Credits

© Allan James @ ScotCat

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ScotCat Sources

Article Article

Etymology = Genus Etymology-genera

Etymology = Species Etymology-specific name

 

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