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Epinephelus fuscoguttatus, commonly known as the Brown-marbled Grouper or Kerapu Macan, is a large, robust species of marine ray-finned fish in the family Serranidae, which includes the groupers and sea basses. It is a highly valued food fish and a significant component of artisanal and commercial fisheries throughout its range. This species is characterized by its distinctive mottled coloration, robust body, and predatory nature, playing a crucial role as an apex predator in coral reef ecosystems.
Ciri-ciri Fizikal
- Bentuk badan
- torpedo
- Warna
- The body is typically light brown to greenish-brown, covered with numerous irregular, dark brown to black spots and blotches that often coalesce to form a reticulated or marbled pattern. The fins are similarly patterned. A distinctive saddle-like blotch is often present on the caudal peduncle, and several dark blotches may be visible along the dorsal fin base. Juveniles tend to have more pronounced and contrasting patterns.
- Jenis sisik
- ctenoid
- Kedudukan mulut
- terminal
- Ciri tersendiri
- Robust, deep body., Large head with a prominent mouth., Rounded caudal fin in adults., Distinctive mottled and blotched pattern resembling camouflage., Often has a dark saddle on the caudal peduncle., The interorbital space is flat or slightly concave.
- Sirip dorsal
- Single dorsal fin with 11 spines and 14-16 soft rays. The spinous portion is lower than the soft-rayed portion.
- Sirip ekor
- Caudal fin is rounded in adults, slightly emarginate in juveniles.
- Sirip pektoral
- Pectoral fins are relatively short and rounded, with 18-20 rays.
- Sirip tersendiri
- Pelvic fins are short, not reaching the anus. Anal fin has 3 spines and 8 soft rays.
Petua Pengenalan
Coloration and Pattern
Look for the characteristic brown-marbled or blotched pattern over a lighter background. The irregular, coalescing spots are key. A dark saddle on the caudal peduncle is often present.
Body Shape
Robust, deep-bodied fish with a large head and mouth. The body depth is typically 2.7-3.3 times in standard length.
Caudal Fin
Adults have a distinctly rounded caudal fin, which can help differentiate it from some other grouper species with truncate or emarginate tails.
Dorsal Fin Spines
Count the dorsal fin spines (usually 11) and soft rays (14-16). The spinous portion is noticeably lower than the soft-rayed portion.
Maxilla
The maxilla (upper jaw bone) extends well past the posterior margin of the eye.
Habitat
- Jenis air
- saltwater
- Kedalaman
- Typically found in depths ranging from 1 to 60 meters, occasionally deeper (up to 120 meters).
- Persekitaran
- Primarily associated with coral reefs, rocky bottoms, and areas with mixed sand and rubble. Juveniles often inhabit shallow reef flats and seagrass beds, while adults prefer deeper reef slopes, channels, and outer reef areas. They are often found near caves, ledges, and other structures that provide shelter.
- Julat geografi
- Widespread in the Indo-Pacific region, from the Red Sea and East Africa eastward to the Line Islands and Tuamotu Archipelago, northward to southern Japan, and southward to Australia (including the Great Barrier Reef) and New Caledonia.
Maklumat Akuarium
- Tahap penjagaan: advanced
- Perangai: aggressive
- Diet: carnivore
- Saiz tangki minimum: 500 gallons
- Suhu: 24-28°C (75-82°F)
- Tahap pH: 8.1-8.4
- Kekerasan air: 8-12 dKH
- Keserasian: Not suitable for typical community tanks. Best kept alone or with very large, robust, and equally aggressive tank mates that cannot be swallowed. Will consume smaller fish and invertebrates.
- Keperluan khas: Requires a very large aquarium with ample hiding places, strong filtration, and a robust protein skimmer due to its large size and messy eating habits. Live or fresh meaty foods are essential. Prone to stress if not provided with adequate space and shelter.
Maklumat Liar
- Status pemuliharaan: vulnerable
- Musim: Spawning aggregations typically occur during specific lunar phases, often around the new moon, in warmer months (e.g., March-June in some regions). Fishing pressure often increases during these periods.
- Harga pasaran: High, particularly for larger specimens. Price varies significantly by region and demand.
- Kepentingan komersial: high
- Rasa: Mild, firm, white flesh with a delicate flavor.
- Tekstur: Flaky and moist when cooked properly.
- Kaedah memasak: Steaming, Grilling, Baking, Frying, Soup
- Nilai pemakanan: Good source of protein, low in fat, and contains essential vitamins and minerals.
Fakta utama
Protogynous Hermaphroditebehavior
Like many groupers, Epinephelus fuscoguttatus is a protogynous hermaphrodite, meaning individuals mature first as females and later transition to males. This sex change typically occurs at larger sizes and older ages.
Spawning Aggregationsbehavior
This species forms predictable spawning aggregations at specific times and locations, making them highly vulnerable to overfishing. These aggregations are critical for reproduction and population sustainability.
Apex Predatorbehavior
As an apex predator on coral reefs, the Brown-marbled Grouper plays a vital role in maintaining the balance of the ecosystem by controlling populations of smaller fish and invertebrates.
Camouflage Masterinteresting
Its intricate mottled coloration provides excellent camouflage, allowing it to ambush unsuspecting prey among the complex structures of coral reefs and rocky bottoms.
Long Lifespanrecord
Epinephelus fuscoguttatus can live for a considerable period, with some individuals estimated to reach over 40 years of age, contributing to its slow reproductive turnover.
Maklumat keselamatan
Kendalikan dengan berhati-hati- Tahap keselamatan: caution
- Berbisa: Tidak
- Kebolehmakanan: edible
- Nota pengendalian: While not venomous, Kerapu Macan possesses sharp dorsal fin spines and a powerful bite. Care should be taken when handling to avoid punctures or bites. Large specimens can inflict serious injury. Always use appropriate gloves and tools when handling.
Spesies serupa
Malabar Grouper
Epinephelus malabaricus
E. malabaricus has larger, more widely spaced dark spots, often with smaller white spots interspersed. It typically lacks the intricate marbled pattern of E. fuscoguttatus and has a more elongated body shape. The caudal fin of E. malabaricus is usually truncate or slightly emarginate, not rounded.
Giant Grouper
Epinephelus lanceolatus
E. lanceolatus is much larger, reaching over 2 meters in length. While it also has a mottled pattern, the spots are generally less defined and more diffuse, and the overall body shape is even more massive and robust. Juveniles of E. lanceolatus have distinct irregular dark bands and blotches, which differ from the fine marbling of E. fuscoguttatus.
Potato Grouper
Epinephelus tukula
E. tukula has large, widely spaced, dark, oval or round spots on a pale background, resembling potatoes. It lacks the intricate, coalescing marbled pattern of E. fuscoguttatus.
Klasifikasi saintifik
- Kerajaan
- Animalia
- Filum
- Chordata
- Kelas
- Actinopterygii
- Ordo
- Perciformes
- Keluarga
- Serranidae
- Genus
- Epinephelus
- Spesies
- fuscoguttatus
Terokai Kerapu Macan
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