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> Trachichthyiformes (Roughies) > Trachichthyidae (Slimeheads)
Etymology: Optivus: Latin, optivus, -a-um = chosen.
More on author: Günther.

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

seewasser riff-verbunden; tiefenbereich 0 - 70 m (Ref. 89444), usually 15 - 35 m (Ref. 28787). Deep-water

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Southwestern Pacific: Restricted to New Zealand.

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 11.3 cm SL Männchen/unbestimmt; (Ref. 76814)

Nocturnally active; inhabits cracks and crevices during the day. Feeds on small mobile benthic organisms (Ref. 26966), by drifting up to its prey and swallowing it whole with a sideways snap of the large extensible mouth (Ref. 26966).

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

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Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea and W.B. Scott, 1991. World fishes important to North Americans. Exclusive of species from the continental waters of the United States and Canada. Am. Fish. Soc. Spec. Publ. (21):243 p. (Ref. 4537)

IUCN Rote Liste Status (Ref. 130435: Version 2024-1)

nicht bedroht (LC) ; Date assessed: 26 December 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

Fischereien: nicht kommerziell

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Estimates based on models

Preferred temperature (Ref. 123201): 16.6 - 23.2, mean 17.9 °C (based on 28 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00955 (0.00451 - 0.02020), b=2.99 (2.80 - 3.18), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).

Trophic level (Ref. 69278): 3.5 ±0.5 se; based on diet studies.

Widerstandsfähigkeit (Ref. 120179): niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Nutrients (Ref. 124155): Calcium = 5.14 [2.35, 16.48] mg/100g; Iron = 0.179 [0.071, 0.452] mg/100g; Protein = 17.9 [16.5, 19.3] %; Omega3 = 0.173 [0.062, 0.470] g/100g; Selenium = 8.29 [2.99, 22.55] μg/100g; VitaminA = 45.9 [8.0, 292.4] μg/100g; Zinc = 0.505 [0.291, 0.834] mg/100g (wet weight);

Optivus elongatus (Günther, 1859)