Pseudauchenipterus nodosus • Auchenipteridae • Cat-eLog

Cat-eLog Data Sheet
Scientific Name	**Pseudauchenipterus nodosus** (Bloch, 1794)
Common Name(s)	Cocosoda Catfish
Type Locality	Tranquebar [actually South America].
Synonym(s)	Auchenipterus furcatus, Pseudauchenipterus guppyi, Pseudauchenipterus nigrolineatus, Silurus nodosus, Silvaichthys aguilerae
Pronunciation	sued aw ken nip ter uss - no doh suss
Etymology	From the Greek pseudes meaning false, auchenos, meaning neck and pteron, meaning fin; in essence, a false Auchenipterus. Latin nodosus, from nodus meaning having numerous or conspicuous protuberances presumably in reference to the fishes conspicuous barbels.
Species Information
Size	220mm (8.7") SL. Find near, nearer or same sized spp.
Identification	A slender species with rather long barbels for an Auchenipterid. The forked caudal fin is jet black. The snout is very rounded with a terminal mouth.P. nodosus has a complete lateral line with zig-zags. Mees (Zoologische Verhandelingen No. 132, 1974) states the colour of the tail fades or even disappears as the fish grows larger although this has been contradicted by at least some individuals grown up to to 18cm that had their caudal fin remain black.
Sexing	Adult males have a genital papilla, are much more slender than females and have a slightly protruding lower jaw. Females grow larger.
General Remarks	A fish that is rarely imported, which is a shame as it is rather active during the day and displays an interesting colour pattern.
Habitat Information
Distribution	South America. Lower reaches of rivers and into estuaries from Venezuela to Brazil. Orinoco, Lower Orinoco (click on these areas to find other species found there) Guyana Waters, Coastal Rivers of Guyanas (click on these areas to find other species found there) Amazon, Lower Amazon (click on these areas to find other species found there) (Click the map-icon to show/hide map of species distribution)
pH	6.6 - 8.0
Temperature	20.0-26.0°C or 68-78.8°F (Show others within this range)
Other Parameters	This species is adapted to life in brackish water (presumably even salt water) but does very well in fresh water too. A strong current is recommended.
Husbandry Information
Feeding	All prepared and frozen foods are greedily taken. Juveniles take their food from the bottom, whereas adolescents and adults obtain theirs mainly from the surface.
Furniture	Some hiding places and lots of swimming space.
Compatibility	This species will not harass other fishes, but it is a strong competitor for food. One must see to it that other fishes get sufficient food when accompanied by auchenipterids.
Suggested Tankmates	This species dislikes being kept with aggressive fishes. Avoid fishes that are too small and risk being eaten by 'accident'.
Breeding	Unreported, but for certain by means of internal fertilization. During reproduction the ventral fins and mandible turn pink.
Further Information
References	Naturg. Ausl. Fische v. 8 35 Pl. 368 (fig. 1),
Registered Keepers	(1) Marc van Arc. Click on a username above to see all that persons registered catfish species. You can also view all "my cats" data for this species.
Breeding Reports	None.
Articles	- CotM 2008 August
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Last Update	2008 Jul 31 11:50 (species record created: 2006 Apr 29 00:00)

Cat-eLog Data Sheet

Scientific Name

Pseudauchenipterus nodosus (Bloch, 1794)

Common Name(s)

Cocosoda Catfish

Type Locality

Tranquebar [actually South America].

Synonym(s)

Auchenipterus furcatus, Pseudauchenipterus guppyi, Pseudauchenipterus nigrolineatus, Silurus nodosus, Silvaichthys aguilerae

Pronunciation

sued aw ken nip ter uss - no doh suss

Etymology

From the Greek pseudes meaning false, auchenos, meaning neck and pteron, meaning fin; in essence, a false Auchenipterus. Latin nodosus, from nodus meaning having numerous or conspicuous protuberances presumably in reference to the fishes conspicuous barbels.

Species Information

Size

220mm (8.7") SL. Find near, nearer or same sized spp.

Identification

A slender species with rather long barbels for an Auchenipterid. The forked caudal fin is jet black. The snout is very rounded with a terminal mouth.P. nodosus has a complete lateral line with zig-zags. Mees (Zoologische Verhandelingen No. 132, 1974) states the colour of the tail fades or even disappears as the fish grows larger although this has been contradicted by at least some individuals grown up to to 18cm that had their caudal fin remain black.

Sexing

Adult males have a genital papilla, are much more slender than females and have a slightly protruding lower jaw. Females grow larger.

General Remarks

A fish that is rarely imported, which is a shame as it is rather active during the day and displays an interesting colour pattern.

Habitat Information

Distribution

South America. Lower reaches of rivers and into estuaries from Venezuela to Brazil.
Orinoco, Lower Orinoco (click on these areas to find other species found there)
Guyana Waters, Coastal Rivers of Guyanas (click on these areas to find other species found there)
Amazon, Lower Amazon (click on these areas to find other species found there)

(Click the map-icon to show/hide map of species distribution)

6.6 - 8.0

Temperature

20.0-26.0°C or 68-78.8°F (Show others within this range)

Other Parameters

This species is adapted to life in brackish water (presumably even salt water) but does very well in fresh water too. A strong current is recommended.

Husbandry Information

Feeding

All prepared and frozen foods are greedily taken. Juveniles take their food from the bottom, whereas adolescents and adults obtain theirs mainly from the surface.

Furniture

Some hiding places and lots of swimming space.

Compatibility

This species will not harass other fishes, but it is a strong competitor for food. One must see to it that other fishes get sufficient food when accompanied by auchenipterids.

Suggested Tankmates

This species dislikes being kept with aggressive fishes. Avoid fishes that are too small and risk being eaten by 'accident'.

Breeding

Unreported, but for certain by means of internal fertilization. During reproduction the ventral fins and mandible turn pink.

Further Information

References

Naturg. Ausl. Fische v. 8 35 Pl. 368 (fig. 1),

Registered Keepers

(1) Marc van Arc.

Click on a username above to see all that persons registered catfish species. You can also view all "my cats" data for this species.

Breeding Reports

None.

Articles