HomeMarine aquarium fishTangs & surgeonfishLittle spinefoot Little spinefoot (Siganus spinus) Scientific name: Siganus spinus Linnaeus, 1758 The Little spinefoot (Siganus spinus) is a marine fish of the family Siganidae. In the aquarium it needs water at 24–28°C (75–82°F). Little spinefoot care at a glanceTemperature24–28°C (75–82°F) BiologyDorsal spines (total): 13; Dorsal soft rays (total): 10; Anal spines: 7; Anal soft rays: 9; Vertebrae: 13. The species can adopt a number of camouflage patterns involving off-white, pale gray to blackish, and various shades of brown. The basic pattern consists of a labyrinth of narrow bands with upper half vermiculate, the lower ones tend to meander horizontally. This pattern extends to the fins. Iris golden dissected by a chocolate cross. 4-5 irregular off-white bars on caudal peduncle. Scales fine on cheeks, densely packed over lower 2/3 of preopercular region. Midline of thorax without scales between pelvic ridges. Fin spines stout, pungent, venomous. Preopercular angle 87-100 degrees.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSiganus spinusFamilySiganidae (Rabbitfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length28.0Common length18.0Depth range1–50 m (3–164 ft)EnvironmentMarine; reef-associated; depth range 1 - 50 m, usually 1 - 20 mClimateTropicalDistributionIndo-West Pacific: India, Sri Lanka, Andaman Islands, Thailand, Indonesia, Australia, South China Sea, Philippines, Taiwan, Ryukyu Islands, Japan, Mariana Islands, Minami Tori Shima [=Marcus Island], Palau, Yap, Truk, Pohnpei and Kosrae, Nauru, Kiribati, New Guinea, Solomon Islands, Vanuatu, New Caledonia, Fiji, Tonga, Samoa, Niue, Cook Islands, and Society Islands Replaced by Siganus luridus in the west Indian Ocean.Conservation status (IUCN)Not EvaluatedThreat to humansVenomousUsesFisheries: minor commercial; aquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More tangs & surgeonfishBlack-spot surgeonfishAcanthurus barieneAchilles tangAcanthurus achillesBlue-spotted spinefootSiganus corallinusStreamlined spinefootSiganus argenteusMasked spinefootSiganus puellusGolden-lined spinefootSiganus lineatusSee all tangs & surgeonfish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026