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Region: TWA

Geographic Zones: GREATER ANTILLES & VIRGIN ISLANDS - Zone 6 » British Virgin Islands - Zone 65 » Tortola (inc. Buck Is. & Frenchmans Cay) - Zone 6501 » Thatch Islands (Gt. & Little Thatch) - Zone 650103

Survey Types: Species & Abundance, Species Only

Dates: 1/1/93 - 12/2/25

Total Surveys: 5

#Species Reported: 107

Average Species Reported on a Survey by Expert Surveyors: 44.00

Average Species Reported on a Survey by Novice Surveyors: 46.50

Survey Type: SA = Species & Abundance; SO = Species Only - How to interpret REEF data?
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Click a column header to sort by that column. Hold shift and click to sort by multiple columns

SurveysBottom Time
ExpertNovice
CodeNameSASOSASO(H:M)
6GREATER ANTILLES & VIRGIN ISLANDS10315:22
65British Virgin Islands10315:22
6501Tortola (inc. Buck Is. & Frenchmans Cay)10315:22
650103Thatch Islands (Gt. & Little Thatch)10315:22
65010301Holiday Inn (Great Thatch)00113:25
TOTALS10315:22

Species

%SF = Sighting Frequency; DEN = Density Score - How to interpret REEF data?
Bar length corresponds to sighting frequency
Color saturation corresponds to density score
Click + to display species image and additional information.
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Bar Jack - Jack
(Caranx ruber)
SF: 100% | DEN: 2.5
Blue Tang - Surgeonfish
(Acanthurus coeruleus)
SF: 100% | DEN: 3
Foureye Butterflyfish - Butterflyfish
(Chaetodon capistratus)
SF: 100% | DEN: 2.5
Sergeant Major - Damselfish
(Abudefduf saxatilis)
SF: 100% | DEN: 2.75
Yellowhead Wrasse - Wrasse
(Halichoeres garnoti)
SF: 100% | DEN: 3.25
Banded Butterflyfish - Butterflyfish
(Chaetodon striatus)
SF: 80% | DEN: 2
Barred Hamlet (Caribbean) - Seabass
(Hypoplectrus puella)
SF: 80% | DEN: 2
Bicolor Damselfish - Damselfish
(Stegastes partitus)
SF: 80% | DEN: 3
Bluehead - Wrasse
(Thalassoma bifasciatum)
SF: 80% | DEN: 3.33
French Grunt - Grunt
(Haemulon flavolineatum)
SF: 80% | DEN: 3
Redband Parrotfish - Parrotfish
(Sparisoma aurofrenatum)
SF: 80% | DEN: 3.33
Sharpnose Puffer - Puffer
(Canthigaster rostrata)
SF: 80% | DEN: 2.33
Spotted Goatfish - Goatfish
(Pseudupeneus maculatus)
SF: 80% | DEN: 2.67
Stoplight Parrotfish - Parrotfish
(Sparisoma viride)
SF: 80% | DEN: 3
Striped Parrotfish - Parrotfish
(Scarus iseri)
SF: 80% | DEN: 2.33
Threespot Damselfish - Damselfish
(Stegastes planifrons)
SF: 80% | DEN: 2.67
Trumpetfish - Trumpetfish
(Aulostomus maculatus)
SF: 80% | DEN: 1.67
Yellowtail Snapper - Snapper
(Ocyurus chrysurus)
SF: 80% | DEN: 3
Beaugregory - Damselfish
(Stegastes leucostictus)
SF: 60% | DEN: 3
Black Hamlet - Seabass
(Hypoplectrus nigricans)
SF: 60% | DEN: 2
Butter Hamlet - Seabass
(Hypoplectrus unicolor)
SF: 60% | DEN: 1
Cero - Mackerel
(Scomberomorus regalis)
SF: 60% | DEN: 2
Cocoa Damselfish - Damselfish
(Stegastes xanthurus)
SF: 60% | DEN: 2
Dusky Damselfish - Damselfish
(Stegastes adustus)
SF: 60% | DEN: 2.5
French Angelfish - Angelfish
(Pomacanthus paru)
SF: 60% | DEN: 1.5
Great Barracuda - Barracuda
(Sphyraena barracuda)
SF: 60% | DEN: 1.5
Longspine Squirrelfish - Squirrelfish
(Holocentrus rufus)
SF: 60% | DEN: 1.5
Masked Goby/Glass Goby - Goby
(Coryphopterus personatus/hyalinus)
SF: 60% | DEN: 4
Ocean Surgeonfish - Surgeonfish
(Acanthurus tractus)
SF: 60% | DEN: 3.33
Princess Parrotfish - Parrotfish
(Scarus taeniopterus)
SF: 60% | DEN: 2.5
Red Hind - Seabass
(Epinephelus guttatus)
SF: 60% | DEN: 2
Redlip Blenny - Blenny - Combtooth
(Ophioblennius macclurei)
SF: 60% | DEN: 1.5
Rock Beauty - Angelfish
(Holacanthus tricolor)
SF: 60% | DEN: 1.5
Slippery Dick - Wrasse
(Halichoeres bivittatus)
SF: 60% | DEN: 3.5
Unidentified Silvery Fish (Silversides / Anchovies / Herrings) - Silvery Fishes - Silversides, Herrings, and Anchovies
(Atheriniformes sp./ Clupeiformes sp.)
SF: 60% | DEN: 3.5
Yellow Goatfish - Goatfish
(Mulloidichthys martinicus)
SF: 60% | DEN: 3
Yellowtail Damselfish - Damselfish
(Microspathodon chrysurus)
SF: 60% | DEN: 2
Yellowtail Hamlet - Seabass
(Hypoplectrus chlorurus)
SF: 60% | DEN: 1
Blackbar Soldierfish - Squirrelfish
(Myripristis jacobus)
SF: 40% | DEN: 3
Blue Chromis - Damselfish
(Azurina cyanea)
SF: 40% | DEN: 3
Bridled Goby Complex (Bridled/Sand-Canyon/Patch-Reef) - Goby
(C. glaucofraenum/C. venezuelae/C. tortugae)
SF: 40% | DEN: 4
Brown Chromis - Damselfish
(Azurina multilineata)
SF: 40% | DEN: 2
Colon Goby - Goby
(Coryphopterus dicrus)
SF: 40% | DEN: 1
Dusky Squirrelfish - Squirrelfish
(Sargocentron vexillarium)
SF: 40% | DEN: 2
Fairy Basslet - Basslet
(Gramma loreto)
SF: 40% | DEN: 2
Gray Angelfish - Angelfish
(Pomacanthus arcuatus)
SF: 40% | DEN: 3
Graysby - Seabass
(Cephalopholis cruentata)
SF: 40% | DEN: 2
Longfin Damselfish - Damselfish
(Stegastes diencaeus)
SF: 40% | DEN: 2
Night Sergeant - Damselfish
(Abudefduf taurus)
SF: 40% | DEN: 1
Orangespotted Filefish - Filefish
(Cantherhines pullus)
SF: 40% | DEN: 1
Puddingwife - Wrasse
(Halichoeres radiatus)
SF: 40% | DEN: 2
Queen Angelfish - Angelfish
(Holacanthus ciliaris)
SF: 40% | DEN: 2
Queen Parrotfish - Parrotfish
(Scarus vetula)
SF: 40% | DEN: 2
Redspotted Hawkfish - Hawkfish
(Amblycirrhitus pinos)
SF: 40% | DEN: 2
Sand Diver - Lizardfish
(Synodus intermedius)
SF: 40% | DEN: 2
Saucereye Porgy - Porgy
(Calamus calamus)
SF: 40% | DEN: 2
Squirrelfish - Squirrelfish
(Holocentrus adscensionis)
SF: 40% | DEN: 2
Tan Hamlet - Seabass
(Hypoplectrus randallorum)
SF: 40% | DEN: 2
Tobaccofish - Seabass
(Serranus tabacarius)
SF: 40% | DEN: 3
Tomtate - Grunt
(Haemulon aurolineatum)
SF: 40% | DEN: 3
Yellowbelly Hamlet - Seabass
(Hypoplectrus aberrans)
SF: 40% | DEN: 1
Yellowfin Mojarra - Mojarra
(Gerres cinereus)
SF: 40% | DEN: 1
Balloonfish - Porcupinefish
(Diodon holocanthus)
SF: 20% | DEN: 0
Belted Cardinalfish - Cardinalfish
(Apogon townsendi)
SF: 20% | DEN: 0
Bermuda Chub/Gray Chub - Chub
(Kyphosus sectatrix / K. bigibbus)
SF: 20% | DEN: 1
Black Durgon - Triggerfish
(Melichthys niger)
SF: 20% | DEN: 0
Blackfin Blenny - Blenny - Labrisomids
(Paraclinus nigripinnis)
SF: 20% | DEN: 1
Bluestriped Grunt - Grunt
(Haemulon sciurus)
SF: 20% | DEN: 0
Bucktooth Parrotfish - Parrotfish
(Sparisoma radians)
SF: 20% | DEN: 0
Caesar Grunt - Grunt
(Haemulon carbonarium)
SF: 20% | DEN: 0
Chalk Bass - Seabass
(Serranus tortugarum)
SF: 20% | DEN: 0
Coney - Seabass
(Cephalopholis fulva)
SF: 20% | DEN: 0
Diamond Blenny - Blenny - Labrisomids
(Malacoctenus boehlkei)
SF: 20% | DEN: 0
Doctorfish - Surgeonfish
(Acanthurus chirurgus)
SF: 20% | DEN: 0
Flamefish - Cardinalfish
(Apogon maculatus)
SF: 20% | DEN: 0
Flat Needlefish - Needlefish
(Ablennes hians)
SF: 20% | DEN: 2
Glasseye Snapper (Atlantic) - Bigeye
(Heteropriacanthus cruentatus)
SF: 20% | DEN: 0
Goldspot Goby - Goby
(Gnatholepis thompsoni)
SF: 20% | DEN: 1
Harlequin Bass - Seabass
(Serranus tigrinus)
SF: 20% | DEN: 0
Hogfish - Wrasse
(Lachnolaimus maximus)
SF: 20% | DEN: 1
Lane Snapper - Snapper
(Lutjanus synagris)
SF: 20% | DEN: 0
Longjaw Squirrelfish - Squirrelfish
(Neoniphon marianus)
SF: 20% | DEN: 0
Mahogany Snapper - Snapper
(Lutjanus mahogoni)
SF: 20% | DEN: 0
Permit - Jack
(Trachinotus falcatus)
SF: 20% | DEN: 3
Queen Triggerfish - Triggerfish
(Balistes vetula)
SF: 20% | DEN: 0
Redtail Parrotfish - Parrotfish
(Sparisoma chrysopterum)
SF: 20% | DEN: 2
Rosy Blenny - Blenny - Labrisomids
(Malacoctenus macropus)
SF: 20% | DEN: 1
Saddled Blenny - Blenny - Labrisomids
(Malacoctenus triangulatus)
SF: 20% | DEN: 0
Sailfin Blenny - Blenny - Pike, tube, and flag
(Emblemaria pandionis)
SF: 20% | DEN: 0
Sand Tilefish - Tilefish
(Malacanthus plumieri)
SF: 20% | DEN: 0
Sawcheek Cardinalfish - Cardinalfish
(Apogon quadrisquamatus)
SF: 20% | DEN: 0
Schoolmaster - Snapper
(Lutjanus apodus)
SF: 20% | DEN: 0
Seaweed Blenny - Blenny - Combtooth
(Parablennius marmoreus)
SF: 20% | DEN: 1
Sharknose Goby - Goby
(Elacatinus evelynae)
SF: 20% | DEN: 3
Sheepshead Porgy - Porgy
(Calamus penna)
SF: 20% | DEN: 2
Silver Porgy - Porgy
(Diplodus caudimacula)
SF: 20% | DEN: 0
Smooth Trunkfish - Boxfish
(Lactophrys triqueter)
SF: 20% | DEN: 0
Southern Stingray - Stingray
(Hypanus americanus)
SF: 20% | DEN: 1
Spanish Hogfish - Wrasse
(Bodianus rufus)
SF: 20% | DEN: 0
Spinyhead Blenny - Blenny - Pike, tube, and flag
(Acanthemblemaria spinosa)
SF: 20% | DEN: 1
Spotfin Butterflyfish - Butterflyfish
(Chaetodon ocellatus)
SF: 20% | DEN: 2
Spotted Drum - Drum
(Eques punctatus)
SF: 20% | DEN: 1
Spotted Trunkfish - Boxfish
(Lactophrys bicaudalis)
SF: 20% | DEN: 0
White Grunt - Grunt
(Haemulon plumierii)
SF: 20% | DEN: 0
Whitespotted Filefish - Filefish
(Cantherhines macrocerus)
SF: 20% | DEN: 0
Yellowhead Jawfish - Jawfish
(Opistognathus aurifrons)
SF: 20% | DEN: 0
Yellowtail (Redfin) Parrotfish - Parrotfish
(Sparisoma rubripinne)
SF: 20% | DEN: 1