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Sardinella fimbriata, commonly known as the Fringe-scale Sardinella, is a small, pelagic schooling fish belonging to the family Clupeidae. It is an important commercial species in many parts of its range, particularly in the Indo-Pacific. These fish are characterized by their silvery bodies, a distinct dark spot on the dorsal fin, and the presence of fimbriated (fringed) scales along the ventral margin, which gives them their common name. They form large schools in coastal waters, feeding primarily on plankton.
Physical Characteristics
- Body shape
- compressed
- Coloration
- Silvery flanks, darker bluish-green dorsal surface. A distinct dark spot is often present on the posterior part of the dorsal fin. Fins are hyaline (transparent) to yellowish.
- Scale type
- cycloid
- Mouth position
- terminal
- Distinctive features
- Fimbriated (fringed) scales along the ventral margin, particularly noticeable on the belly., A distinct dark spot on the posterior part of the dorsal fin., A series of scutes (modified scales) along the belly., Absence of a dark spot on the body behind the gill opening (distinguishes from some other Sardinella species).
- Dorsal fin
- Single, relatively short dorsal fin located mid-body, with 13-18 soft rays. Often has a dark spot posteriorly.
- Tail fin
- Deeply forked caudal fin.
- Pectoral fin
- Small, located low on the body, with 13-16 rays.
- Distinctive fins
- Pelvic fins are small, located below the dorsal fin origin, with 8 rays.
Identification Tips
Ventral Scales
Carefully examine the scales along the belly. Sardinella fimbriata has distinctively fringed or fimbriated scales, which are small, tooth-like projections on the posterior margin of the scales. This is a key diagnostic feature.
Dorsal Fin Spot
Look for a prominent dark spot on the posterior (rear) part of the dorsal fin. This spot is usually quite clear and helps distinguish it from other sardinella species.
Body Spot Absence
Note the absence of a dark spot on the body behind the gill opening. This differentiates it from species like Sardinella gibbosa (Goldstripe Sardinella) which often has such a spot.
Scutes
Count the number of pre-pelvic and post-pelvic scutes (modified, keeled scales along the belly). S. fimbriata typically has 18-20 pre-pelvic scutes and 12-15 post-pelvic scutes.
Habitat
- Water type
- saltwater
- Depth
- Typically found in shallow coastal waters, from the surface down to about 50 meters (164 feet).
- Environment
- Pelagic-neritic, forming large schools in coastal areas, estuaries, and sometimes entering brackish waters. Prefers turbid waters and areas with high plankton productivity.
- Geographic range
- Indo-West Pacific: East Africa to Indonesia, north to Japan, and south to northern Australia. Particularly abundant in the Arabian Sea, Bay of Bengal, and Southeast Asian waters.
Aquarium Information
- Care level: expert
- Temperament: peaceful
- Diet: filter_feeder
- Minimum tank size: 500 gallons
- Temperature: 24-28°C (75-82°F)
- pH level: 8.1-8.4
- Hardness: 8-12 dKH
- Compatibility: Best kept in large schools of their own kind. Not suitable for typical home aquariums due to size and schooling requirements. Compatible with other peaceful, large pelagic species in public aquariums.
- Special requirements: Requires extremely large tanks with strong filtration and water movement to simulate open ocean conditions. Highly sensitive to water quality and stress. Diet consists of live and frozen phytoplankton and zooplankton. Not typically kept by hobbyists.
Wild Information
- Conservation status: least concern
- Seasonality: Spawning seasons vary geographically, but generally peak during monsoon or post-monsoon periods. Available year-round in some regions, with peak catches often linked to specific environmental conditions.
- Market price: Varies significantly by region and season, generally low to moderate as a commodity fish.
- Commercial importance: high
- Taste: Mild, oily, distinct 'sardine' flavor.
- Texture: Soft, flaky, delicate.
- Cooking methods: Grilled, Fried, Smoked, Canned, Curried
- Nutritional value: Rich in Omega-3 fatty acids, protein, Vitamin D, and B vitamins. A healthy and affordable food source.
Key Facts
Fringed Scalesinteresting
The common name 'Fringe-scale Sardinella' directly refers to the unique fimbriated (fringed) scales found along its ventral margin, a key identification feature.
Schooling Behaviorbehavior
Sardinella fimbriata forms massive schools, often comprising thousands of individuals, which is a common anti-predator strategy and aids in feeding efficiency.
Ecological Importanceamazing
As a primary consumer of plankton, this species plays a crucial role in marine food webs, transferring energy from lower trophic levels to higher predators, including larger fish, marine mammals, and seabirds.
Commercial Fishery Stapleinteresting
It is one of the most important small pelagic fish species in many Asian countries, supporting significant artisanal and commercial fisheries, providing food security and livelihoods.
Rapid Life Cyclebehavior
Like many clupeids, S. fimbriata has a relatively short lifespan and rapid reproductive cycle, allowing its populations to recover quickly from fishing pressure under favorable conditions.
Safety Information
Safe- Safety level: safe
- Venomous: No
- Edibility: edible
- Handling notes: No specific handling precautions are required beyond standard fish handling practices. They are not venomous and do not possess sharp spines that pose a significant threat. Handle gently to avoid damaging their delicate scales and flesh if intended for consumption.
Similar Species
Goldstripe Sardinella
Sardinella gibbosa
S. gibbosa typically has a golden stripe along the flank (though this can fade) and often a dark spot on the body behind the gill opening, which S. fimbriata lacks. The ventral scales of S. gibbosa are not fimbriated to the same extent as S. fimbriata.
Indian Oil Sardine
Sardinella longiceps
S. longiceps has a more elongated body, a larger head, and a distinct dark spot on the operculum (gill cover) which is absent in S. fimbriata. Its scales are not fimbriated.
Shortbody Sardinella
Sardinella brachysoma
S. brachysoma has a deeper body and a more rounded belly profile compared to the more slender S. fimbriata. Its scales are also not fimbriated.
Scientific Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Actinopterygii
- Order
- Clupeiformes
- Family
- Clupeidae
- Genus
- Sardinella
- Species
- S. fimbriata
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