Bumphead Parrotfish
Also known as: Bolbometopon muricatum (scientific name) · Green humphead parrotfish · Buffalo parrotfish · Mameng (local name in parts of the Philippines)
Definition
The bumphead parrotfish (Bolbometopon muricatus), also called the green humphead parrotfish, is the largest parrotfish in the world, reaching over a meter in length and recognizable by its slate-green body and the blunt, square hump adorning adult foreheads. In Philippine reefs such as Tubbataha and other remote seascapes it travels in schools that scrape algae and crush coral with powerful beaks, excreting the sand that builds island beaches, a role that has earned parrotfish the title of reef engineers. (Wikipedia)
Identities
| Source Type | Identity |
|---|---|
| Wikipedia | Green humphead parrotfish |
| Wikidata | Q2343773 |
| DBpedia | N/A |
| ProductOntology | N/A |
| Wiktionary | N/A |
| Library of Congress Subject Headings (LCSH) | N/A |
| MeSH | N/A |
| NCBI Taxonomy | Bolbometopon muricatum |
| AGROVOC | coral reefs |
| Google Scholar | Bolbometopon muricatum bumphead parrotfish Philippines coral reef bioerosion Vulnerable fishery |
| ConceptNet | fish |
| OpenCyc | N/A |
Also Known As
- Bolbometopon muricatum (scientific name)
- Green humphead parrotfish
- Buffalo parrotfish
- Mameng (local name in parts of the Philippines)
Examples and Analogies
- Living Sand Factory: A single large school can process tonnes of coral each year, turning rock into the white sand of postcard beaches the way rivers grind quartz into river sand.
- Reef Lawn Mower: By scraping algae that would otherwise smother corals, it keeps the reef’s balance the way grazing carabao keep a pasture open.
Usage Scenarios
1. Reef Ecology Monitoring
Marine scientists track its schools as indicators of reef health, since heavily fished areas lose the biggest parrotfish first.
2. Dive Tourism
Encountering a passing herd of humpheads at Tubbataha ranks among the most prized experiences in Philippine diving.
Strategies
- Protect remote foraging and sleeping aggregations through no-take zones and park patrols, as the species’ slow recovery makes it vulnerable to depletion.
- Restrict night spearfishing at sleeping schools, the method most destructive to its populations.
Security and Safety Measures
- Divers should hold position and let schools pass rather than pursue them, both for safety and to avoid dispersing aggregations.
- Fishers and buyers should observe species protections in marine parks, where taking parrotfish is prohibited.
Historical Context
The species has been known to Pacific peoples for centuries, and its ecological role drew scientific attention as reef studies quantified bioerosion and sand production in the twentieth century. In the Philippines, surveys through the 2000s documented its decline across populated seascapes while well-patrolled parks like Tubbataha retained schools, and the IUCN lists it as Vulnerable, making it a global poster species for coral reef fisheries management. (Wikipedia)
Challenges and Controversies
Spearfishing at Night
Sleeping aggregations can be harvested wholesale by night spearfishers, collapsing local populations.
Sand Budget Debate
Managers weigh its coral-crushing feeding against its sand-producing benefit, balancing bioerosion with reef accretion.