Goldfish fins
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October 02 13:00:51, 2024
The fins are the main organs of the fish and the organs of the body. The dorsal fins, anal fins, and caudal fins of common fish are located in the middle of the sides of the body and are unpaired as single leaves. They are collectively referred to as odd fins (individual meaning); the pectoral and pelvic fins are located on both sides of the body, one on each side. Yes, they are collectively known as even fins (in pairs). In addition to the largest change in color, goldfish is the change in fins. Most of their fins become wide, long, or degenerate or short, or split into two-leaves, four-leaf, etc. Anal fins have single, double, and anal fins. Changes in fins are one of the main characteristics of distinguishing goldfish species: (1) Dorsal fins: The role of fish dorsal fins is to maintain the body's upright balance, making it less prone to tilting left and right. Goldfish is divided into species with dorsal fins and species without dorsal fins: There are species of dorsal fins—general goldfish, grass goldfish, some dragon eyes, tall heads, lion's heads, etc. all have dorsal fins, and dorsal fins are relatively large. No dorsal fin species - this species is called egg goldfish. The eggfish goldfish has a sleek back. Although it does not have a scale, it is short and slightly egg-shaped. The caudal fin is divided into two leaves equal to each other to maintain the balance of the body. There is a type of incomplete dorsal fin - that is, the dorsal fin is not fully degraded, there are also a few fins, this type of goldfish is generally eliminated when juvenile fish. (2) Pectoral fins: There are a pair of pectoral fins near the lid. The main role is to change direction and draw water. In the breeding season, it can also be used as a marker for identifying male and female. Starchaser will appear on male fins, but not females. appear. (3) Pelvic fins: There is a pair of pelvic fins between the pectoral and anal fins. Although they do not achieve the effect of swimming, they can be used to make accurate maneuvers. When the fish is healthy, the pelvic fins extend outward, and when the pelvic fins contract near the abdomen , indicating that the fish's health problems, need to pay enough attention. (4) Anal fin: The role of the anal fin is approximately the same as that of the dorsal fin. The anal fins of goldfish are located behind the anus. Some species have single anal fins (such as grass goldfish). In other species, different individuals have double anal fins, but also have single anal fins or no anal fins. Most people think that double anal fins are excellent. Traits, but individuals with single anal fins are not eliminated, individuals without anal fins are generally eliminated when juvenile fish. (5) Caudal fins: The tail fins of fish have a role of advancing and steering. The caudal fins of the goldfish vary greatly. Whether the tail fins are symmetric or beautiful or not, basically determines the pros and cons of this goldfish. The caudal fins of goldfish can be roughly classified into the following types: Single-finned fins have long tails and short tails. For example, the tail fins of grass goldfish are short-tailed, single-tailed, and the caudal fins of swallowtail goldfish are long-tailed. Double tail fins - also known as open tail. During the embryonic period, the skin behind the anus bifurcates and develops into an open tail. According to the number of bifurcations, the open tail is divided into two types: trifoliate tail – the two tail leaves are connected and the lower two leaves are separated to form a trifoliate tail . The four-tailed tail—the upper and the lower two tail leaves are separated to form a four-leaf tail.