REEF CHECK TARGET FISHES

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Presentation transcript:

REEF CHECK TARGET FISHES 🐟 🐟 Eureka Amadea May 2018

TARGET FAMILIES Groupers Barramundi Cod Sweetlips Snappers Butterflyfish Humphead Wrasse Parrotfish Bumphead Parrotfish Moray Eels

HOW TO IDENTIFY A FISH Morphology How it swims Lower jaw (mandible) Interorbital region Eye Upper jaw Dorsal fin (and spines) Caudal peduncle Caudal fin Anal fin Suborbital region Operculum (gill cover) Gill opening Pelvic fin Pectoral fin Morphology Shape of the head, body, mouth, fins and tail Markings and patterns Color (might differ between juvenile and adult) How it swims Continuously Stop start motion Where it stays in the water column? High in the water column Near the bottom

HOW TO RECOGNIZE THE TARGETS

Count only individuals over 30cm! GROUPERS Some have distinctive spines on their dorsal (top) fin Ambush predators  usually wait motionless on top of corals Eyes at the top of the head, close to the mouth Wedge-shaped tail Protruding lower jaw Often have spots Bottom dwellers  flat underside Count only individuals over 30cm!

Very shy so will likely hide under corals and rocks BARRAMUNDI COD Flattened head followed by a hump Very shy so will likely hide under corals and rocks Swim with pectoral fins

SWEETLIPS Thicker body than a grouper Upper lip thicker and protrudes over the bottom Low set mouths with thick lips! Often have spots and stripes patterns

Manyspotted Sweetlips - Juvenile Watch out for this one… Manyspotted Sweetlips - Juvenile Juveniles can often vary greatly in their appearances from their adult forms

SNAPPERS Shallow sloping forehead Not symmetrical about the middle line Angular shape of head Move continuously Often found in large schools Usually in mid-water Thin lips

BUTTERFLYFISH Small, disc-shaped, laterally compressed or triangular Small protruding mouth Often bright yellow, black, and white colours Very small gap between tail and rear fins Often move in pairs

Off-transect sighting included!! HUMPHEAD WRASSE HUGE fish!! Hump on their forehead Eyes can move independently Thickened lips Off-transect sighting included!!

Only count those above 20cm!! PARROTFISH Large scales Often green with blue and pink marks – colorful! Swim with pectoral fins Fused teeth form a beak – you can’t get the mouth wrong! Only count those above 20cm!!

Off-transect sighting included!! BUMPHEAD PARROTFISH VERY LARGE Also has a “beak” instead of teeth Typically feed in schools Large bump! Off-transect sighting included!!

MORAY EELS Hide in holes Often still with their mouths open

Note anything rare even if off-transect RARE ANIMALS Note anything rare even if off-transect

We will answer further questions you have on camp  STUDY WELL… We will answer further questions you have on camp  AND SEE YOU SOON! 