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A creek chub with black spot disease. Black spot disease is a disease affecting fish. It is caused by larvae (metacercariae) of Diplostomatidae or Heterophyidae flatworms, which are encysted in the skin. It can affect both freshwater and marine [1] fish. [2] [3] It appears as tiny black spots on the skin, fins, and flesh of the fish.
Common Goldfish come in a variety of colors including red, orange, "gold", white, black, and yellow ('lemon') goldfish. The Black Telescope is a black-colored variant of telescope goldfish that has a characteristic pair of protruding eyes. It is also referred to as popeye, moor, kuro-demekin in Japan and dragon-eye in China. The small Bubble ...
Bubble Eyes have metallic scales, and they are similar to the celestial eye goldfish. [3] The eyes of the Bubble Eye goldfish are normal in the young fry but will start to develop eye bladders three months after hatching. [3] Like ranchu, the bubble eye goldfish lacks a dorsal fin and has a double tail. [4]
When a black widow spider bites, it typically causes a painful pinprick sensation. The site of the bite then swells slightly and forms a red rash. You might see two fang marks inside the bite area ...
As the name implies, it causes severe anemia of infected fish. Unlike mammals, the red blood cells of fish have DNA, and can become infected with viruses. The fish develop pale gills, and may swim close to the water surface, gulping for air. However, the disease can also develop without the fish showing any external signs of illness, the fish ...
Black gill disease is visible to the human eye. Affected gills may exhibit crusted, surface-corroding, [citation needed] scattered light brown to black spots or a large black patch on one or both sides of the fish. [3] Discoloration at the gill area will be distinct from the rest of the body. These symptoms are separate from gill fouling or fin ...
The eyes are positioned on the top of the head, and the fish floats at the water surface with only the lower half of each eye underwater. The two halves are divided by a band of tissue and the eye has two pupils, connected by part of the iris. The upper half of the eye is adapted for vision in air, the lower half for vision in water. [35]
Bodies of the males are yellowish brown, with white spots above and bluish orange spots/bands on the flanks. Found near coral and rocky reefs. Omnivorous 25 cm. Aquarium fish Spot-fin porcupinefish (Bouletangue) Pale green to olive brown covered with black spots; shades of white below. Takes the shape of a ball covered with spines when inflated.