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> Siluriformes (Catfishes) > Plotosidae (Eeltail catfishes)
Etymology: Tandanus: A local name, tandan, in Australia.

Environment: milieu / climate zone / depth range / distribution range पारिस्थितिकी

; स्वच्छ जल, अलवण जल ड़िमरसल; पोटामोड़िरोमस (Ref. 51243); गहराई सीमा 10 - ? m. Temperate; 5°C - 25°C (Ref. 2060); 12°S - 43°S

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Oceania: endemic to Australia.

Length at first maturity / आकार / वज़न / Age

Maturity: L_m 45.0 range ? - ? cm
Max length : 90.0 cm TL पुल्लिंग / अलिंग; (Ref. 5259); common length : 45.0 cm TL पुल्लिंग / अलिंग; (Ref. 5259); अधिकतम प्रकाशित वज़न: 6.8 kg (Ref. 36739); अधिकतम सूचित उम्र: 8 वर्षो (Ref. 1107)

Short description पहचान कुंजी | आकृति विज्ञान | मौरफोमैटरिक्स

Head large; thick and fleshy lips; nostrils tubular. First dorsal fin high, with a strong serrated spine and 6 rays. Skin tough and smooth. Body coloration in adults vary from olive-green to brown, black or purplish dorsally and white ventrally. Urogenital papilla triangular in females; longer and cylindrical in males.

Adults inhabit slow moving streams, lakes and ponds with fringing vegetation. They swim close to sand or gravel bottoms. More abundant in lakes than in flowing water (Ref. 44894). Usually solitary but juveniles sometimes form loose aggregations. Mainly bottom-feeders (Ref. 44894). Feed on insect larvae, prawns, crayfish, mollusks, and small fishes. Breeding occurs between spring and mid-summer when water temperatures rise to between 20° and 24°C (Ref. 44894). Utilized for human consumption.

Life cycle and mating behavior परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | Fecundity | लार्वा

Water temperature (20-24 °C) considered the primary spawning stimulus. There is direct pairing during spawning. Male builds nest (0.6-2.0 m in diameter) and cares for eggs in the nest up to 2 weeks. The nest is made of gravel and rocks with a central sandy depression in which the female deposits up to 20,000 eggs depending on her size (Ref. 5259). Eggs scattered into the rubble are tended and guarded by the male after the female departs (Ref. 205). Hatching occurs in 7-10 days at 18°C (Ref. 240).

Main reference Upload your references | संदर्भ | संयोजक | सहयोगीयो

Allen, G.R., 1989. Freshwater fishes of Australia. T.F.H. Publications, Inc., Neptune City, New Jersey. (Ref. 5259)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Least Concern (LC) ; Date assessed: 13 February 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Venomous (Ref. 4537)

Human uses

मात्स्यिकी: व्यापारिक; आखेट मत्स्य: हां; जलजीवालय: व्यापारिक

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इंटरनेट स्रोत

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00646 (0.00280 - 0.01488), b=3.07 (2.87 - 3.27), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).

Trophic level (Ref. 69278): 3.3 ±0.48 se; based on food items.

Generation time: 11.0 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.

लौटाव (Ref. 120179): निम्न, न्यूनतम जनसंख्या दुगनी होने का समय 4.5 - 14 वर्ष। (tm=5; K=0.10).

Fishing Vulnerability (Ref. 59153): Moderate vulnerability (37 of 100).

Price category (Ref. 80766): Unknown.

Tandanus tandanus (Mitchell, 1838)