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Tatia intermedia (Steindachner, 1877)

 

Image contributors to this species:

Chris Ralph (4) Daniel Blom (4) Yann Fulliquet (2) Allan James (4) Graham Ramsay (1)

ScotCat Sources:

Factsheet  Etymology = Genus  Etymology = Species

Other Sources:

Search  Fishbase  Catalog of Fishes  Global Biodiversity Information Facility   FishNet2   iNaturalist

Relevant Information:

Description: Dorsal spines (total): 1; Dorsal soft rays (total): 4 - 5; Anal soft rays: 9 - 10; Vertebrae: 35 - 36. Differs from other species by having a wide elliptical cranial fontanel; short postcleithral process not reaching vertical through origin of dorsal fin. The only other Tatia with a variable colouration is Tatia galaxias, but this species differs from T. galaxias by its short postcleithral process ; its small eye, 21.4-26.3% HL and its long snout 38.8-44.3% HL. Can be further diagnosed by the following characters: nasal ossified with wide medial flanges partially sutured to lateral margin of mesethmoid and caudal-fin lobes of mature females with same length, but mature males with elongated upper lobe are other distinguishing features. A iii,6-7; V i5. Post-Weberian vertebrae 35-36. Colouration: Body coloration variable, usually with elliptical spots along sides of body, large specimens with faint spots; or colour pattern uniformly pale brown; and caudal fin with small spots or pale brown. Sexual Differences: The anal fin is the key to the sexual dimorphism of this genus, if you think of the male and female of most livebearer fish (Goodeidae family) and you wil not be too far away with this assumption. The female has a normal anal fin but the males are modified into a copulatory organ with the first and second ray thickened and longer, it is thought that the male uses this to clasp the female during the spawning embrace.

Common Name:

Snowflake Woodcat

Synonyms:

Centromochlus intermedius

Family:

Auchenipteridae

Distribution:

South America: Amazon River basin and rivers of the Guianas. Type locality: Marabitanos; Pará, Brazil.

Size:

12.0cm (4¾ins)

Temp:

21-24°c (69-75°f.)

p.H.

6.5-7.5.

Reference:

Sarmento-Soares, Luisa Maria; Martins-Pinheiro, Ronaldo Fernando A systematic revision of  Tatia (Siluriformes: Auchenipteridae: Centromochlinae) Neotropical Ichthyology, 6(3):495- 542, 2008.
ScotCat Factsheet June 200. no.048.
Burgess, W.E. 1989 An atlas of freshwater and marine catfishes. A preliminary survey of the Siluriformes. T.F.H. Publications, Inc., Neptune City, New Jersey (USA). 784 p.
Baensch, H.A. and R. Riehl 1991 Aquarien atlas. Bd. 3. Melle: Mergus, Verlag für Natur- und Heimtierkunde, Germany. 1104 p.
Catfish Association Great Britain. Volume1.
Sterba, Gunther: Freshwater Fishes of the World 1.



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Family: Auchenipteridae  Back to Ident-A-Cat  Click on Thumbnails

Click for full imageTatia intermedia
Click for full imageTatia intermedia
Click for full imageTatia intermedia
Click for full imageTatia intermedia
Head view
Click for full imageTatia intermedia
Eggs-laid under a piece of wood
Click for full imageTatia intermedia
Eggs-on the third day
Click for full imageTatia intermedia
10mm fry a couple of days after hatching
Click for full imageTatia intermedia
Click for full imageTatia intermedia
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Female
Click for full imageTatia intermedia
6 month old fry
Click for full imageTatia intermedia
6 month old fry
Click for full imageTatia intermedia
Sub-adult feeding
Click for full imageTatia intermedia
1 month old fry

 

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