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Syngnathiformes (Pipefishes and seahorses) >
Syngnathidae (Pipefishes and seahorses) > Nerophinae
Etymology: Doryrhamphus: Greek, dory = lance + Greek, rhamphos = bill, beak (Ref. 45335).
Eponymy: Edwin Janss Jr (1915–1989) was a Californian real estate developer, Chairman of Janss Investment Corporation, and a recreational diver. [...] (Ref. 128868), visit book page.
More on authors: Herald & Randall.
Environment: milieu / climate zone / depth range / distribution range
Ökologie
seewasser riff-verbunden; tiefenbereich 0 - 35 m (Ref. 1602). Tropical; 19°N - 29°S
Western Central Pacific: Gulf of Thailand to the Solomon Islands, north to the Philippines, south to Queensland; Belau and Truk in Micronesia.
Size / Gewicht / Alter
Maturity: Lm ? range ? - ? cm
Max length : 14.0 cm TL Männchen/unbestimmt; (Ref. 48635)
Rückenflossenstacheln (insgesamt) : 0; Rückenflossenweichstrahlen (insgesamt) : 22 - 25; Afterflossenweichstrahlen: 4. Superior trunk and tail ridges discontinuous; inferior trunk ridge ending on anal ring; lateral trunk ridge continuous with inferior tail ridge; body rings 16; tail rings 21-23.
Found in tide pools and reef crevices. Also found in sheltered inner reefs, usually in caves with sponges and below large plate corals. Ovoviviparous (Ref. 205). The male carries the eggs in a brood pouch which is found under the tail (Ref. 205). Very active cleaner and has cleaning station that is visited by apogonids and damsels where adults work in pairs (Ref. 48635). Minimum depth from Ref. 58018. Solitary or in pairs (Ref 90102).
Life cycle and mating behavior
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven
Male carries the eggs in a brood pouch (Ref. 205).
Myers, R.F., 1991. Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602)
IUCN Rote Liste Status (Ref. 130435: Version 2024-2)
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Tools
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Estimates based on models
Preferred temperature (Ref.
123201): 25.9 - 29.3, mean 28.7 °C (based on 2406 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00093 (0.00036 - 0.00242), b=3.05 (2.83 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.9 ±0.5 se; based on size and trophs of closest relatives
Widerstandsfähigkeit (Ref.
120179): hoch, Verdopplung der Population dauert weniger als 15 Monate. (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
Nutrients (Ref.
124155): Calcium = 135 [77, 258] mg/100g; Iron = 1.09 [0.62, 1.83] mg/100g; Protein = 17.7 [16.5, 18.9] %; Omega3 = 0.117 [0.065, 0.214] g/100g; Selenium = 35.2 [18.0, 79.8] μg/100g; VitaminA = 109 [38, 317] μg/100g; Zinc = 1.7 [1.1, 2.5] mg/100g (wet weight);
![Image of Doryrhamphus janssi (Janss\](/images/thumbnails/jpg/tn_Dojan_u1.jpg "Image of Doryrhamphus janssi (Janss\")
