Teleostei (teleosts) >
Gobiiformes (Gobies) >
Kraemeriidae (Sand darters)
Eponymy: Professor Augustin Friedrich Krämer (1865–1941) was born in Chile to German parents who returned to Germany (1867). [...] (Ref. 128868), visit book page.
More on author: Steindachner.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; freshwater; brackish; reef-associated; depth range 0 - 5 m (Ref. 86942). Tropical; 14°N - 18°S
Indo-Pacific: East Africa to the Society Islands (Ref. 1602).
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 3.5 cm TL male/unsexed; (Ref. 4343)
Dorsal spines (total): 5 - 6; Dorsal soft rays (total): 14; Anal spines: 1; Anal soft rays: 13. Diagnosis: Characterized by translucent whitish colour with brown speckling and reddish smudge on occipital region; broadly separated spinous and soft portions of dorsal rays, fully connected by membrane, a broader gap between fifth and sixth dorsal spines compared to gap between previous spines; fourth to seventh pectoral-fin rays branched; pelvic fins separated to base with branched rays; 10 cirri on lower edge of gill cover instead of scalloped margin; depth of body 8.5-10.2 times in standard length, head length 3.9-4.3 in standard length; narrow interorbital space, less than half of eye diameter (Ref. 90102).
Inhabits sandy areas subject to strong wave action (Ref. 1602). Also reported from freshwater streams, mainly where freshwater streams ran dead in beach (Ref. 404, 4343). It feeds on polychaetes (Ref. 4343). Of no commercial interest but may be taken incidentally (Ref. 48316).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Myers, R.F., 1991. Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602)
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 - 29.4, mean 28.5 °C (based on 1178 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5098 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00102 (0.00046 - 0.00225), b=3.06 (2.88 - 3.24), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.1 ±0.26 se; based on food items.
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
