Teleostei (teleosts) >
Gobiiformes (Gobies) >
Trichonotidae (Sanddivers)
Etymology: Trichonotus: Greek, thrix = hair + Greek, noton = back (Ref. 45335).
Eponymy: Robert A ‘Bob’ Halstead (1944–2018) was an early innovator in the development of dive tourism, pioneer diving instructor and underwater photographer. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range 11 - 35 m (Ref. 90102). Tropical
Western Pacific: Papua New Guinea (Ref. 26146) and Indonesia (Ref. 28620).
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 15.0 cm TL male/unsexed; (Ref. 48636)
Dorsal soft rays (total): 39 - 41. Trichonotus halstead is similar to T. setiger but has a beautifully colored dorsal fin (Ref. 48636). No free pterygiophores under dorsal fin (Ref 12934).
Like other sand divers, it occurs on sand slopes with strong currents at times (Ref. 48636). Minimum depth reported from Ref. 26146.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Clark, E. and M. Pohle, 1996. Trichonotus halstead, a new sand-diving fish from Papua New Guinea. Environ. Biol. Fishes 45(1):1-11. (Ref. 26146)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
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Internet sources
Estimates based on models
Preferred temperature (Ref.
123201): 27.5 - 29, mean 28.2 °C (based on 50 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.5 ±0.48 se; based on food items.
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
