Fish ID Flashcards
Bignose Unicorn Fish
Size: up to 20 inches (50cm)
Blue lips, blue band in front of eye
Blue vertical lines and spots on sides
Able to pale or darken colors and markings
Gilded Triggerfish-Male
Size: up to 8 ¾ inches (22cm)
Steel blue with white scale spots
Large blue patch on lower head
Yellow margins on dorsal, anal, & tail fins
Anchor Tuskfish
Size: up to 15 inches (38cm)
Gray head
White-dark gray lower body
Rectangular black marking on back surrounded by pearly white areas
Bicolor Parrotfish
Cetoscarus bicolor, the bicolour parrotfish, is a species of fish belonging to the family Scaridae.
Bicolour parrotfish is a species associated to coral reef. It usually can be found in lagoon and seaward reefs at depths between 1 and 30 m.
It is among the largest parrotfishes, growing to a length of up to 90 centimetres (35 in). As in many of its relatives, it is a sequential hermaphrodite, starting as female (known as the initial phase) and then changing to male (the terminal phase). The initial phase is dark brown with a large cream patch on the upper part of the body. The terminal phase is very colourful, overall green with pink spotting to the body and edging to the fins. Juveniles are white with a black spot on the dorsal fin and an orange band through the eye.
This species can be found in the Indo-Pacific, from the Red Sea to the Tuamoto Islands, Izu Island and southern Great Barrier Reef.
Bignose Unicorn Fish
Size: up to 20 inches (50cm)
Blue lips, blue band in front of eye
Blue vertical lines and spots on sides
Able to pale or darken colors and markings
Blacklip Butterflyfish
Size: up to 5 ½ inches (14cm)
Light brown with “dirty” white head & diffuse central bar
Black lip
Black ventral fins
Blackspot Angelfish-Female
Size: up to 5 inches (13cm)
Light gray head
Yellow coloration on upper body
Black tail margins
Lack bar above eye
Blackspot Angelfish-Male
Size: up to 7 inches (18cm)
White with numerous black bars
Gold spots on dorsal & tail fins
Black spot on breast
Black-Tailed Dascyllus
Size: up to 3 inches (8cm)
White with 3 black bars
Large white spot between eyes
Black rear-half of tail
Blackspot Tuskfish
Size: up to 3 feet (90cm)
Greenish gray in color
Vertical blue stripes on body
Small dark spot on base of mid-dorsal fin
Black Blotched Fantail Ray
The round ribbontail ray (Taeniura meyeni) is a species of stingray in the family Dasyatidae, found throughout the nearshore waters of the tropical Indo-Pacific, as well as off islands in the eastern Pacific. It is a bottom-dwelling inhabitant of lagoons, estuaries, and reefs, generally at a depth of 20–60 m (66–200 ft). Reaching 1.8 m (5.9 ft) across, this large ray is characterized by a thick, rounded pectoral fin disc covered by small tubercles on top, and a relatively short tail bearing a deep ventral fin fold. In addition, it has a variable but distinctive light and dark mottled pattern on its upper surface, and a black tail.
Generally nocturnal, the round ribbontail ray can be solitary or gregarious, and is an active predator of small, benthic molluscs, crustaceans, and bony fishes. It is aplacental viviparous, with the embryos sustained by yolk, and later histotroph (“uterine milk”) secreted by the mother; up to seven pups are born at a time. Although not aggressive, if provoked the round ribbontail ray will defend itself with its venomous tail spine, and it has been responsible for at least one fatality. It is valued by ecotourist divers and recreational anglers. This slow-reproducing species is threatened by commercial fishing, both targeted and as bycatch, and habitat degradation across much of its range. As a result, the International Union for Conservation of Nature (IUCN) has assessed it as Vulnerable.
Blackspotted Puffer
Size: up to 13 inches (33cm)
Variable combination of colors
Black lips
Black pectoral fin base
Few scattered black spots
Blackspotted Puffer
Size: up to 13 inches (33cm)
Variable combination of colors
Black lips
Black pectoral fin base
Few scattered black spots
Blacktip Reef Sharks
The blacktip reef shark (Carcharhinus melanopterus) is a species of requiem shark, family Carcharhinidae, easily identified by the prominent black tips on its fins (especially on the first dorsal fin and the caudal fin). Among the most abundant sharks inhabiting the tropical coral reefs of the Indian and Pacific Oceans, this species prefers shallow, inshore waters, and its exposed first dorsal fin is a common sight in the region. Most blacktip reef sharks are found over reef ledges and sandy flats, though they have also been known to enter brackish and freshwater environments. This species typically attains a length of 1.6 m (5.2 ft).
Blacktip reef sharks have extremely small home ranges and exhibit strong site fidelity, remaining within same local area for up to several years at a time. They are active predators of small bony fishes, cephalopods, and crustaceans, and have also been known to feed on sea snakes and seabirds. Accounts of the blacktip reef shark’s life history have been variable and sometimes contradictory, in part reflecting geographical differences within the species. Like other members of its family, this shark is viviparous with females giving birth to two to five young on a biennial, annual, or possibly biannual cycle. Reports of the gestation period range from 7–9, to 10–11, to possibly 16 months. Mating is preceded by the male following closely behind the female, likely attracted by her chemical signals. Newborn sharks are found further inshore and in shallower water than adults, frequently roaming in large groups over areas flooded by high tide.
Timid and skittish, the blacktip reef shark is difficult to approach and seldom poses a danger to humans unless roused by food. However, people wading through shallow water are at risk of having their legs mistakenly bitten. This shark is used for its meat, fins, and liver oil, but is not considered to be a commercially significant species. The International Union for Conservation of Nature has assessed the blacktip reef shark as Near Threatened. Although the species as a whole remains widespread and relatively common, overfishing of this slow-reproducing shark has led to its decline at a number of locales.
Blue Devil Damselfish
Size: up to 3 inches (8cm)
Blue with blue dorsal fin
Scattered yellow/white spots
Bright yellow/orange tail
Black band from snout to eye
Females: all blue
Blue Jaw Trigger Fish
Common Name: Blue Jaw Trigger Fish, Blue Jaw Trigger Fish, Gilded Trigger Fish, Blue Chin Trigger Fish
Scientific Name: Xanthichthys auromarginatus
Size: Up to 11.8 inches
Distinguishing Features: X. auromarginatus has an oval shaped, laterally flat body that is a bluish-gray color with white scale spots. There are bright metallic blue rings around the eyes. The males can be differentiated by the yellow outline on the fins and tail as well as the distinctive bright blue splash across the jaw and throat. The male’s coloration becomes more dramatic with age.
Origin: From the Indo-Pacific, East Africa, and the Hawaiian Islands, to the north as far as Ryukyus and South to the Cocos-Keeling Atoll and New Caldonia.
Natural Habitat: X. auromarginatus tend to form loose groups often located near drop-offs and ledges a few meters from the bottom.
Blue-Green Chromis
Size: up to 3 inches (8cm)
Blue-pale green with no markings
Bluespine Unicornfish
Size: Up to 2 ¼ feet (70cm)
Short forehead horn does not project past mouth
Blue tail spines
Bluestreak Cleaner Wrasse
Size: up to 4 ½ inches (11.5cm)
White-yellowish head
White forebody that becomes bluish toward tail
Stripe from snout becomes wider towards tail
Clown Triggerfish
Size: up to 19 ¾ inches (50cm)
Black undercolor with large white spots on lower body
Pale patch with dark spots on back
Yellow band across top of snout
Orange lips
Coral Hind Grouper
Size: up to 16 inches (41cm)
Orange red-reddish brown
Numerous dark-edged blue spots
Narrow blue margin on all fins except pectorals
Crescent Wrasse
Size: up to 10 inches (25cm)
Blue to blue green
Lavender-green bands on head
Lavender pectoral fins with blue margin
Deep lunate tail with yellow center
Diamondfish
The Blue Diamond Discus has been selectively bred for its brilliant blue coloration. It’s distinguishing feature is the small white markings on it’s body. However, the overall coloration of Discus will vary depending on mood and overall health of the fish. The Discus has surpassed the Angelfish as the most popular freshwater aquarium fish. Depending on sub-species, the natural range of the Discus extends from the Amazon to the Rio Negro Regions of South America.
The Blue Diamond Discus requires an advanced level of care due to its feeding habits and water filtration requirements. Territorial during spawning, this otherwise peaceful fish is among the schooling group, forming a well-defined nuclear family.
Becoming slightly territorial when breeding, it is best to breed an established pair, or maintain a group of young Discus and allow them to pair themselves. Warm, soft, slightly acidic water is required for spawning. The pair will clean a flat surface (usually a broad leaf or the side of the aquarium) prior to spawning. The parents must not be removed from the fry; the fry feed on their parents’ mucus.
Largely carnivorous, the Blue Diamond Discus prefer freeze-dried bloodworms and tubifex, pellet food designed for Discus, high-quality flake food, and meaty frozen foods.
Approximate Purchase Size: 2-1/2” to 3-1/2”
Emperor Angelfish
Size: up to 15 inches (38cm)
Vivid alternating blue & yellow stripes
Yellow tail
Black eye mask with blue edge
Broad, blue edged black bar behind head
Fivestripe Wrasse
Size: up to 6 ¼ inches (16cm)
Purple head with green bands
Green upper body, yellow lower body
Pair of purple wavy-edged stripes along upper body
Purple tail borders
Flagtail Grouper
Size: up to 10 ¾ inches (27cm)
AKA: V-tail Grouper
Brown-red, darker towards tail
Diagonal white lines across corners of tail
Flame Hawkfish
Size: up to 3 ½ inches (9cm)
Brilliant red in color
Broad zone of black on back
Black ring around eye
Freckled Hawkfish
Size: up to 8 ¾ inches (22cm)
Usually brown in color, but colors can be variable
Numerous freckles on head and forebody
Brown striped area towards rear of body
Giant Gold Damsel
Size: up to 6 inches (15cm)
Bright yellow-gold including fins
Blue markings around eye
Long pointed rear dorsal and anal fins
Gilded Triggerfish-Female
Size: up to 8 ¾ inches (22cm)
Steel blue with white scale spots
Maroon stripe on base of dorsal and anal fins
Maroon margin on tail
Green Chromis
Blue-Green Chromis
Size: up to 3 inches (8cm)
Blue-pale green with no markings
Harlequin Tuskfish
Size: up to 12 inches (30cm)
White undercolor
6-9 blue edged orange bars extend from head to tail base
White tail with orange margin
Rear body becomes darker with age
Highfin Snapper (Rooster Snapper)
Size: up to 24 inches
Lateral blue lines
Yellow lower body
Long tail and posterior portion of dorsal fin
Dark spot near base of tail fin
Hippo Tang / Palette Surgeonfish
Size: up to 12 ¼ inches (31cm)
Brilliant blue head and body
Black hook-shaped markings
Yellow tail with black borders
Ladder Wrasse-Male
Size: up to 12 inches (30cm)
Salmon pink to orange in color
Stripes consist of green-blue rectangles along side of body