Blue Angelfish

Blue angelfish, Holacanthus bermudensis, otherwise known as the Bermuda blue angelfishes, and blue angels are blue-brown / green-colored large angelfish that have yellow tips/margins on their blue caudal fins, with fins that reach up to 45 cm long. They have large mouths and comb-like teeth arranged in brush-like bands. They, unlike the queen angelfish, lack the electric blue ring on their foreheads, as well as have tails that are blue with a yellow tip rather than completely yellow. It is normal, however, to see hybrids of these two angelfishes in the wild, with the appearance of these hybrids varying. They have compressed and discus-shaped bodies with blunt rounded heads. They have one long continuous dorsal fin. Like the queen angelfish, blue angelfish are almost always found in breeding pairs. Juvenile blue angelfishes, however, are dark blue with yellow tails, with yellow surrounding their pectoral fins and blue vertical bars on their bodies. The bars fade with time and are replaced by light brown and green coloring. The juveniles of blue angelfish queen angelfish are very similar, with a major difference being that the juvenile blues tend to have straighter vertical blue bars. Blue angelfish are common in the Caribbean and western tropical Atlantic, with ranges of 35 N - 18 N, and 100 W - 64W. They are found near Bermuda, the Bahamas, southern Florida, and Mexico. They live near the bottom often in coral reefs found at depths between 2 - 92 meters, but usually between 5 -25 meters. Juveniles are often near bays, channels, and inshore reefs. Similar to other reef fish, they sleep inside the reef at night. They feed primarily 95% on sponges as well as small benthic invertebrates, algae, plankton, and jellyfish. Juveniles also are cleaner fish, i.e. clear other fish of external parasites.

Great Barracuda

First described in 1792 by Johann Julius Walbaum in Sphyraena barracuda. Worldwide, the great barracuda is found near shore tropical and subtropical seas (30N - 30S). It is thus common in the Western Atlantic from New England (US) to Brazil, as well as in the Eastern Atlantic, the Indo-Pacific, and the Red Sea. It is not really common in the easter Pacific Ocean. While common in nearshore coral reefs, seagrasses, and mangroves, they can be found in the open ocean, mostly at or near the surface. Usually a solitary fish, they can be found in small groups over reefs and sandy bottoms. While still young, great barracudas use mangroves and seagrass beds as cover from predators. In their second year, however, they move into deeper reef habitats. The great barracuda has a slender, streamlined body that is round in the middle. The top of the head is nearly flat, while its mouth is large and contains large sharp teeth. The pectoral fin tips extend to the the pelvic fins, while the spinous and soft dorsal fins are widely separated. The great barracuda is brownish or bluish gray on the top, with a green/silvery tint on the sides, and a white belly. The upper side may have 18-23 dark bars, easiest seen when it is resting. The black spots on the lower sides distinguish it from other species of barracuda. The second dorsal fin, anal, and caudal fins are violet to black with whitish tips. They can grow up to 6'8 ft (2 meters) long and weigh up to 110 pounds (50kg). They have a lifespan of about 14 years, and while males reach sexual maturity at 2 years, females reach it at close to 4 years old.

Atlantic Sailfish

The Atlantic sailfish, Istiophorus albicans, is a metallic blue fish with a large sail-like dorsal fin, and a long and pointed bill. First identified in 1792, the only other sailfish is the Indo-Pacific, Istiophorus platypterus. The Atlantic sailfish is one of the smaller members of the billfishes or Istiophoridae family, with a maximum size of about 3.15 m and a weight of 58.1 kg (highest recorded weight), with the females being larger than the males. Distinguishing features include a bill-shaped upper jaw, circular in cross-section, and about twice the length of their lower jaw. The first of this fish's dorsal fins are very long and tall (thus this name "sailfish"), running most of the length of their body, with the 20th ray as the longest. Their first anal fin is located far back on their body, and their second dorsal and anal fins are both short and concave, roughly mirroring each other in size and shape. Their pectoral and pelvic fins are long, with their pelvic fins nearly reaching the origin of their first anal fin. Their pelvic fins have one spine and multiple soft rays fused together. A pair of grooves run along the under side of their body, into which their pelvic fins are depressed. Their tail fin has double keels and caudal notches on the upper and lower surfaces. In general, their body is dark blue at the top, and white with brown spots at the bottom. They also have various bars that consist of many light blue dots on their sides, while their fins are all blackish blue, except for the anal fin, which is white. In general, these fish are highly migratory and can be found from 40N and 40S (latitude) in the western Atlantic, and from 50N to 32S in the eastern Atlantic (map included). At the northern and southern extremes, they appear only during the warmer months. Although the instances have been few, there are recorded times of several juvenile specimens having been caught there. In the western Atlantic, its highest abundance is in the Gulf of Mexico, the Caribbean, and the Atlantic coast of Florida, where it is the official state saltwater fish; in the eastern atlantic, they are plentiful off the coast of West Africa. While sailfish have little commercial value (their meat is relatively tough), they are highly sought after by recreational fishermen. As you can see by this video, they are not considered a threat to humans.