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reef trigger fish

marine biology

Katrina Joiner

on 8 December 2012

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Transcript of reef trigger fish

English: Reef Triggerfish

Chamorro: Pulonnon

Scientific: Rhinecanthus rectagulus

Hawaiian: Humuhumunukunukuapua'a
-small second spine, used to lock its main spaine into an upright position
-very ill-tempered Distinctive Features - teeth and top lips are blue
-grunts like a pig when caught -close set teeth inside chubby mouth
-can blow jets from mouth Created by: katrina Joiner
The Humu is also known as the rectangular trigger fish, Hawaiian trigger fish, Picasso Triggerfish, and Reef Triggerfish. Humuhumunukunukuapua'a have a diamond-shaped body with armor-like scales. They are called a triggerfish because of their sharp, spike-like dorsal fin. Facts about the REef trigger fish Reef Triggerfish - Humuhumunukunukuapuaa. Sharp and dangerous dorsal fin They can also bite, so be careful or you could end up like this..... OUCH.. THAT'S A TRIGGERFISH BITE. Chubby Bunny :) C O l O R A T I O N -blue/black trips across its eyes
-blue lip and black wedge at base of caudal fin
-caudal fin outline blown and yellow
-ability to alter coloration
-most vivid when fish is healthy and unthreatened
-tan body with dark bands Shallow outer reef habitats habitat coastal habitats
coral reefs The reef trigger fish eats : - algae and reef invertebrates
*small crustaceans
*brittle starts
*sea urchins
*snails - smaller fish (the triggerfish is an omnivore) Prey or predator? The triggerfish is both
a prey and predator triggerfish is a reef fish Predators of the reef trigger fish: *tuna
*sharks Juvenile Adult *amberjack
*sharks defense mechanisms (several ways) -dart into a puka
(meaning hole)
-erect the first two dorsal spines, and use the second spine (trigger) to lock the first one is place
-ability to swim forward or backward
-individually move each eye -use tail for quick bursts of speed
stage 1 stage 2 stage 3 FINAL STAGE LIFE STAGES larvel or pelagic stage (eggs) the sedentary or benthic stage juvenile (young) 8-200 mm
about adult migration -reef triggerfish typically do not migrate.
-they like to stay around tropical reefs. how do they reproduce? triggerfish meet at traditional mating grounds according to moons and tides males
prepare nests & females
lay eggs
attached to the
sea floor females share care of the eggs until they hatch, blowing water on them to keep them well supplied with oxygen the eggs are then externally fertilized by the male parent Ta-Da!!! where is the reef triggerfish's home? The reef triggerfish is found: -Guam
-other areas in the Indo-pacific region found in any
or subtropical ocean -Pacific
-Indian Including: economic importance
Don't eat me!
I'm toxic. - they are not eaten by humans because their skin is toxic

-they can be caught by a "rod and reel" or by a spear

-they are popular aquarium fish not threatened by human activity not endagered or on the brink of extinction Sources: http://www.waquarium.org/_library/images/education/marinelifeprofiles/reeftrigger0909.pdf






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