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Haemulon plumierii, commonly known as the Corocoro or White Grunt, is a medium-sized marine fish belonging to the grunt family (Haemulidae). It is a commercially important species and a popular target for recreational anglers throughout its range. Known for its distinctive 'grunting' sound produced by pharyngeal teeth, it is a schooling fish often found in coastal waters, particularly around reefs and seagrass beds. Its coloration can vary, but it typically exhibits a silvery-white body with characteristic blue stripes on the head and golden-yellow fins.
身体的特徴
- 体形
- compressed
- 体色
- Silvery-white body, often with a yellowish tint on the lower flanks. Head typically has distinctive blue horizontal stripes, sometimes with a golden-yellow stripe below the eye. Fins are usually golden-yellow, especially the caudal and anal fins. Juveniles may have a dark lateral stripe that fades with age.
- うろこのタイプ
- ctenoid
- 口の位置
- terminal
- 特徴的な部位
- Blue horizontal stripes on the head, Golden-yellow fins, Large scales, Thick lips, Produces a 'grunting' sound when distressed or caught
- 背びれ
- Single dorsal fin, deeply notched, with 12 spines and 15-17 soft rays.
- 尾びれ
- Moderately forked caudal fin.
- 胸びれ
- Long and pointed pectoral fins.
- 特徴的なひれ
- Anal fin with 3 spines and 8-9 soft rays. Pelvic fins are thoracic.
識別のコツ
Head Stripes
Look for the characteristic blue horizontal stripes on the head, which are a key identifier for Haemulon plumierii.
Fin Coloration
The golden-yellow color of the caudal and anal fins is often prominent and helps distinguish it from other grunt species.
Body Shape and Color
Its silvery-white, compressed body with a slightly yellowish tint on the lower flanks is typical.
Sound
If handled, it will often produce a distinct 'grunting' sound, a characteristic of the Haemulidae family.
生息地
- 水質タイプ
- saltwater
- 生息水深
- Typically found in shallow coastal waters, from 1 to 30 meters (3 to 100 feet), occasionally deeper.
- 環境
- Prefers rocky reefs, coral reefs, seagrass beds, and mangrove areas. Juveniles are often found in seagrass beds and estuaries for protection. Adults form large schools during the day and disperse at night to feed.
- 分布域
- Western Atlantic Ocean, from Bermuda and the coast of North Carolina (USA) south to Brazil, including the Gulf of Mexico and the Caribbean Sea.
アクアリウム情報
- 飼育難易度: intermediate
- 性格: peaceful
- 食性: carnivore
- 最小水槽サイズ: 180 gallons (680 liters)
- 水温: 72-78°F (22-26°C)
- pH値: 8.1-8.4
- 硬度: 8-12 dKH
- 混泳の相性: Generally compatible with other peaceful to semi-aggressive fish of similar size. Avoid very small tank mates or highly aggressive species.
- 特別な注意点: Requires a large tank with plenty of swimming space and rockwork for shelter. Good water quality and strong filtration are essential. Best kept in small schools (3-5 individuals) to reduce stress and encourage natural behavior. Can be sensitive to sudden changes in water parameters.
野生での情報
- 保全状況: least concern
- 旬の時期: Available year-round, but peak abundance may vary regionally, often higher in warmer months.
- 市場価格: Moderate, varies by region and season.
- 商業的重要性: high
- 味: Mild, flaky, and slightly sweet.
- 食感: Firm, white flesh.
- 調理法: fried, baked, grilled, steamed, broiled
- 栄養価: Good source of lean protein, omega-3 fatty acids, and essential vitamins and minerals.
重要な事実
Nocturnal Foragersbehavior
Corocoro grunts are primarily nocturnal feeders. During the day, they aggregate in large schools over reefs or other structures, but at night they disperse to forage over sandy bottoms and seagrass beds for invertebrates.
The Grunting Soundinteresting
The common name 'grunt' comes from the sound these fish produce by grinding their pharyngeal teeth together. This sound is amplified by their swim bladder and is often heard when they are caught or distressed.
Ecological Rolebehavior
As both predators of benthic invertebrates and prey for larger piscivorous fish, Corocoro grunts play a significant role in the transfer of energy between different trophic levels in coastal marine ecosystems.
Juvenile Nurseriesbehavior
Juvenile Corocoro grunts heavily utilize seagrass beds and mangrove estuaries as critical nursery habitats, providing shelter from predators and abundant food resources before they move to adult reef habitats.
安全情報
安全- 安全レベル: safe
- 有毒: いいえ
- 食用性: edible
- 取り扱いに関する注意: No specific handling precautions are required beyond standard fish handling practices. They may 'grunt' when caught, which is harmless. Their dorsal and anal fin spines can be sharp, so handle with care to avoid punctures.
類似種
French Grunt
Haemulon flavolineatum
French Grunts have distinct yellow stripes along their body, often angled, and typically lack the prominent blue head stripes of the Corocoro. Their fins are also more yellowish overall, rather than just golden-yellow.
Blue-striped Grunt
Haemulon sciurus
Blue-striped Grunts have prominent blue and yellow stripes running horizontally along their entire body, not just on the head. Their caudal fin is typically dark or dusky, not golden-yellow.
Tomtate Grunt
Haemulon aurolineatum
Tomtate Grunts are generally smaller and have a more slender body. They typically have a dark spot at the base of the caudal fin and a less pronounced stripe pattern on the head, often with a single golden stripe.
学名分類
- 界
- Animalia
- 門
- Chordata
- 綱
- Actinopterygii
- 目
- Perciformes
- 科
- Haemulidae
- 属
- Haemulon
- 種
- plumierii