Actinopterygii (ray-finned fishes) > Cypriniformes
(Carps) > Cyprinidae
(Minnows or carps) > ex-danioninae
Etymology: Tanichthys: Latin, tan, tannus = the crushed bark of oak and other trees + Greek, ichthys = fish (Ref. 45335).
Environment / Climate / Range
Freshwater; demersal; pH range: 6.0 - 8.0; dH range: 5 - 19. Tropical; 18°C - 22°C (Ref. 1672); 24°N - 18°N, 104°E - 121°E (Ref. 85799)
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 4.0 cm TL male/unsexed; (Ref. 5258); common length : 2.1 cm SL male/unsexed; (Ref. 35840)
(total): 2 - 3;
soft rays: 7 - 9. Body green, with golden vertical zones on central axis of body and a number of dark lines above zones; dorsal and anal fins green and transparent edge; base of caudal fin with large red round spots. Snout blunt; lip thin and lower jaw a bit protruded; barbel absent; dorsal fin short and opposite anal fin, pectoral and pelvic fins small; pelvic scute absent (Ref. 45563).
Asia: China (Ref. 1739) and Viet Nam (Ref. 44416). Thought to be extinct in the wild (Ref. 89952).
Found in clean, sluggish coastal stream amongst hydrophytes (Ref. 85799). Can survive in water temperature as low as 5°C. Feed on zooplankton and detritus. Aquarium keeping: in groups of 5 or more individuals; minimum aquarium size 60 cm (Ref. 51539).
Kottelat, M., 2001. Freshwater fishes of northern Vietnam. A preliminary check-list of the fishes known or expected to occur in northern Vietnam with comments on systematics and nomenclature. Environment and Social Development Unit, East Asia and Pacific Region. The World Bank. 123 p.
IUCN Red List Status (Ref. 90363)
Threat to humans
Aquarium: highly commercial
CollaboratorsPicturesStamps, CoinsSoundsCiguateraSpeedSwim. typeGill areaOtolithsBrainsVision
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01120 (0.00513 - 0.02445), b=3.04 (2.87 - 3.21), based on all LWR estimates for this BS (Ref. 93245
Trophic Level (Ref. 69278
): 2.7 ±0.31 se; Based on food items.
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (tm<1).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .