Humphead wrasse populations in E. Malaysia 2005


Humphead wrasse distribution in Sabah 2005

Humphead wrasse distribution in Sabah 2005

 

Look at the huge differences in the numbers of fish per kilometre in fished and lightly fished areas. The fact that no Humphead wrasse were seen in Sarawak possibly indicates that the cyanide fishers were active in the area before the survey was done. See Humphead wrasse biology & populations on protected reefs’.

 

The population at Sipadan (lower right star) is probably 75 fish and at Pulau Layang Layang (top star) is approximately 350 fish.

 

Coral reef survey to 2005 menu

Survey sitesEcotourismFisheries issues  – Fisheries issues E MalaysiaPelagic fisheriesNon reef fisheries

Blast fishingFrequencyRegulationsEconomicsEffects of bombs on diversityeffects of bombs on reef structure

Cyanide fishingCyanide fishing Map -Regional threatsMarket forcesSocial impacts of cyanideEnvironmental costs of Cyanide -

 Reef fish population declineCoral trout & Leopard GroupersLarge grouper size change with fishingSweetlipsSnapperssmall groupersSex change & threatened species -

Humphead wrasse & Live fish trade  -location mapRegionally extinctHHW populationsSpawning & FeedingID of individuals

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