Species learning profile
Pennant coralfish
Heniochus acuminatus
Pennant coralfish (Heniochus acuminatus) is a saltwater fish associated with reef habitat in Indo-Pacific. A long white dorsal banner arches over black-and-white bands.
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At a glance
- 水域
- 海水
- Habitat
- 珊瑚礁
- 最大长度
- 25 cm
- 分布范围
- 印度洋—太平洋
- 科
- Chaetodontidae
- 目
- Perciformes
Observe
How to identify Pennant coralfish
- A long white dorsal banner arches over black-and-white bands.
- Guide context: reef habitat in Indo-Pacific.
- Reported maximum length: 25 cm — roughly ruler-length. Maximum is not the same as typical adult size.
Field note: color, size, and markings can change with age, sex, season, depth, and lighting. Use several traits together.
Place and pattern
Where it lives—and how it behaves
Habitat and range
This species is associated with reef habitat across Indo-Pacific. Reef crevices provide shelter while current, coral, algae, and neighboring animals supply food.
Behavior
Often travels in pairs or small groups
Food-web connections
What it eats and why it matters
Diet
Zooplankton and benthic invertebrates.
Ecological role
Feeds across both water-column and reef communities.
Remember
One fact worth keeping
Pennant coralfish可长到约 25 厘米，常见于珊瑚礁附近。
Think like a conservationist
A conservation lens
Reef fish are affected by coral loss, warming, destructive fishing, pollution, and the removal of key grazers or predators.
This habitat lens is not a current population-status assessment. Status can differ among regions and change as new assessments are published; follow the reference links and local fisheries or wildlife agencies for current decisions.
Recall
Quick knowledge check
Which habitat is most closely associated with Pennant coralfish in this guide?
Keep exploring
References and further reading
Fishdle summarizes stable identification and ecology concepts in plain language. Taxonomy and population knowledge continue to change, so use primary assessments and regional authorities for conservation or management decisions.
Make connections