American swordfish
American swordfish is called the animal swimmer The fastest ones in the water usually swim at a speed of 90 kilometers. Although dolphins are also good swimmers, they cannot swim as fast as the sailfish. It turns out that American sailfish have a very special shape, which is why they can swim so fast.
The American swordfish is 6 cm long and looks like a moonfish, but its back and abdomen are broad and its tail peduncle is also wide. The snout of the head is blunt and rounded. The outer edge of the caudal fin is straight. The dorsal fin is larger than the anal fin, and the edges of the dorsal and anal fins are curved. The body color is changeable, including red, light yellow, blue, purple, etc., some are dark or light, some are bluish or reddish, and there are more than 10 vertical star stripes all over the body. The dorsal fin is full of dark stars, and its star stripes resemble the stars and stripes of the American flag, hence its name.
The body of the American swordfish is similar to that of a moonfish, but its dorsoventrally is wide and its tail peduncle is also wide. The snout of the head is blunt and rounded. The outer edge of the caudal fin is straight. The dorsal fin is larger than the anal fin, and the edges of the dorsal and anal fins are curved. The body color is changeable, ranging from red, light yellow, blue, purple, etc., some are dark or light, some are bluish or reddish, and the upper jaw extends forward like a sword. The green-brown body is studded with gray-white freckles. These round spots are arranged in vertical rows and look like dotted lines. The first dorsal fin of the swordfish is long and tall, with a concave upper edge at the front end. When they are extended vertically, they look like a sailboat hoisted on a ship, or part of a flag being pulled. That's why people call it swordfish.
There is a section between the second dorsal fin and the first dorsal fin of the American sailfish. The front spine of the first dorsal fin is about 1/2 the length of the middle fin spine. There are many light colored spots on the sides of the body. The first dorsal fin is particularly tall and sail-like. The pelvic fin is longer, with only one fin spine, which can be folded into the abdominal concavity and almost reaches the anal fin. Except for the exposed snout, the rest are covered with needle-like round scales, mostly buried under the skin. The caudal peduncle is thinner, with 2 short and short raised ridges on each side. The kiss spreads forward, long and pointed, like a sword. The pectoral fins are short. The head and back of the body are blue.
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