Tag Archive: catfishes


TAXONOMY
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii (Ray-finned fishes)
Order: Siluriformes (Catfishes)
Family: Doradidae (Thorny catfishes)

Genus/species: Oxydoras niger

GENERAL CHARACTERISTICS:  A stocky brown catfish with three pairs of barbels.  Like all members of their family, have bony plates that protect the head and hook-like scutes that run along the lateral line. The Scutes on the O. niger are sharp and can cause significant lacerations.

Length up to 1 m (3.3 ft) in length and weigh up to 14 kg (30 lbs)

DISTRIBUTION/ HABITAT: South America: Amazon and possibly Orinoco River basins. Occur over mud in streams and lakes.

DIET IN THE WILD: The Ripsaw Catfishes large mouth creates a suction to vacuum up detritus, insect larvae, crustaceans, and plant material. When the forest is flooded, they feed exclusively on seeds and fruit.

REPRODUCTION: Sexes separate. Fertilization is external. Adults are non-guarders.

CONSERVATION: IUCN AND CITES: No special status.

REMARKS: Members of the family Doradidae are known as “talking catfishes” as they make a strange, creaking noise when removed from the water., a sound produced by movement of the pectoral spine within its socket and amplified by the swim bladder.

References

California Academy of Sciences Steinhart Aquarium Amazon Flooded Tunnel 2018

Animal Diversity Web ADW animaldiversity.ummz.umich.edu/accounts/Oxydoras_niger/

 fishbase www.fishbase.org/summary/Oxydoras-niger.html

 Ron’s flickr https://www.flickr.com/photos/cas_docents/6181844571/in/set-72157620568438047/

Ron’s WordPress Shortlink  http://wp.me/p1DZ4b-96

 

 

TAXONOMY
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii (ray-finned fishes)
Order: Siluriformes (Catfish)
Family :Pimelodidae (Long-whiskered catfishes)

Genus/species: Phractocephalus hemiliopterus

GENERAL CHARACTERISTICS: Named for its orange-red caudal fin. Elongated with a rounded snout and three pairs of barbels around the mouth. The base body color is light black and little dark spots can be seen on the head. A wide, white band extends from the caudal peduncle to the tip of the snout. The belly is black, as are the fins except the upper tip of the dorsal fin which may be orange to red.
Length to 134 cm (4.5 feet). Weight to 44 kg (97 lbs).


Redtail Catfish Phractocephalus hemiliopterus (Pimelodidae)  IMG_8974

 

DISTRIBUTION/HABITAT: South America: Amazon and Orinoco basins. Found in large freshwater rivers, streams and lakes.

DIET IN THE WILD: Fish, crabs and fruit.

REPRODUCTION: They exhibit external fertilization and do not guard the eggs. They live approximately 20 to 30 years.

CONSERVATION: IUCN Red list and CITES: Not Evaluated.

REMARKS: Because of its size, this cat is a popular game fish. Has been introduced, but is not established in Florida, perhaps a good thing as the redtail is a voracious predator on smaller fishes.
Unfortunately, the Steinhart inhabitants of our open-topped tank have swallowed shoes, cameras, sunglasses, a plastic dinosaur and cell phones, occurrences that have occasionally required manual (and extremely careful) extraction by a biologist or the veterinarian.

References 

fishbase fishbase.org/summary/Phractocephalus-hemioliopterus.html

California Academy of Sciences Rainforest Docent Training Class 2014

Ron’s flickr  https://www.flickr.com/photos/cas_docents/3313914505/in/set-72157620568438047/

Ron’s WordPress shortlink   http://wp.me/p1DZ4b-91

TAXONOMY
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Siluriformes
Family: Callichthyidae

Genus/species: Corydorcas sp.

 Orange Neon Corydoras  3703717946_731674ba1e_b

DISTRIBUTION/HABITAT: Amazon

HABITAT: fresh water bottom dweller.

DIET IN THE WILD: invertebrates, detritis

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Rainforest Cardinal Tetra Exhibit, AM14

flickr  http://www.flickr.com/photos/cas_docents/sets/72157625825649576/with/3703717946/

WordPress Shortlink: http://wp.me/p1DZ4b-18H

TAXONOMY
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Siluriformes
Family: Mochokidae (Squeakers or Upsidedown Catfishes)

Genus/species: Synodontis nigriventris

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GENERAL CHARACTERISTICS: Length 9-10 cm (3-4 inches). Ground color khaki, small reddish to black dots cover entire body. Body scaleless with large eyes, a large adipose fin, a forked tail, and three pairs of barbels. The head is flattened and the sides of the body are slightly compressed.

DISTRIBUTION/HABITAT: Central Congo basin of Africa. Found in freshwater streams in schools of hundreds to thousands.

DIET IN THE WILD: Omnivorous scavenger: Feeds mainly at night on insects, crustaceans and filamentous algae, plant debris, bowels of dead fishes. Grazes algae from undersides of cave ceilings or leaves with its little rasp-like teeth while in the inverted position, a posture also used while gleaning food from the water’s surface. Also locates food on the substrate among debris such as rotting plants.

REPRODUCTION: Egg layers, with the young swimming upside-down after they are approximately 2 months old.

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REMARKS:Remarks: Swimming “upside-down” (ventral toward surface) is normal for adults of this species, which often feed and breathe at the surface. One common name for the family refer to the group’s propensity to make squeaking noises, especially when netted and taken from the water.

CONSERVATION: IUCN least concern 2010.

Water planet Defense cluster catfish WP34

flickr http://www.flickr.com/photos/cas_docents/sets/72157625017923579/with/3400184132/

WordPress Shortlink http://wp.me/p1DZ4b-11B

Pseudoplatystoma fasciatum

Actinopterygii (Ray-finned fishes) > Siluriformes (Catfish) > Pimelodidae (Long-whiskered catfishes)

DISTRIBUTION: South America: Amazon and Orinoco basins.

HABITAT: Riverbeds, shady streams, flooded forest areas.

APPEARANCE: Elongated, streamlined body with long snout; large mouth with three pairs of long barbels. Black spots and stripes on body and fins in irregular pattern; the pattern is banded, thus the common name. Usually silver to brown above; white to silver below.  Can grow to 90 cm or more in captivity.

DIET: Nocturnal hunter; feeds on fish and crabs.

REPRODUCTION and DEVELOPMENT: Separate sexes, external fertilization. Does not guard eggs.

REMARKS: Venomous spines.

Prized as food and game fish, and often found in South American food markets. Flesh is succulent.

WORDPRESS SHORTLINK: http://wp.me/p1DZ4b-8W

LOCATION; Flooded Amazon Tunnel



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