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The bottom fin on a fish acts like a keel on a boat. It helps keep the fish right side up in the water.

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17y ago

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Where is the location of the pectoral fin and pelvic fin in the perch?

The pelvic fin is in the bottom; toward the front side of the middle. The pectoral fin is on the bottom, in the front. The pectoral fin helps control the direction the perch moves. The pelvic fin also controls the direction it moves. The anal fin is in the bottom back side and helps the fish balance. The dorsal fins are on top, one in the middle one it the back and stabalize the fish and aid in sharp turns. The caudal fin, or the tail, is in the back and helps to propel the fish through the water.


How old are mollies before you can tell what sex they are it looks like their all girl because they have bottom fin but does it take time to tell what sex they are?

Look at the fish's bottom side. If the "anal fin" is fan shaped the fish is a female, if the fin is thin and pointed like a nozzle then the fish is a male. In the male this fin is called a 'gonopodium'


On a fish what can be anal pectoral or pelvic?

A fish has several different types of fins. There are the pectoral fins, located beneath the operculum (gills). There is the pelvic fin, located at the bottom of the fish, below the pectoral fin. There is the anal fin, which i located behind the anus, and there is the dorsal fin as well. It is located on top of the fish.


Where is the anal fin located on an Oscar?

The anal fin is the one just in front of the fishes anus.


How do you tell the sex of mollie fish?

If you look at there bottom fin the males have a fin that sticks strait back where females are fan shaped.


What is the name of the fish with a top and bottom fin?

That is almost all fish, but maybe you are thinking of a sun fish (mola mola) in particular.


In what parts of the world are snakehead fish native to?

The Snakehead fish is a freshwater predatory fish. it is native to Africa and Asia. They can be distinguished from other fish by being very long with a long fin on the top and slightly shorter fin on the bottom.


What is the name of the fin behind the dorsal fin?

On a dolphin and most fish the fin behind the dorsal fin is the tail fin. Some fish, such as knife fish, have no dorsal fin or tail fin. Dolphins of course are mammals, not fish.


How do you know if you have a female guppie or a male guppie?

A female usually has a fan shaped anal fin( anal fin is on the bottom of the fish), and a male's anal fin is pointy, or "rod shaped".


What does the tail fin of a fish acts as a?

The tail fin of a fish (the caudal fin) is a fish's means of propulsion through the water.


Is the position of the pectoral fin lateral in sharks and ventral in bony fish?

The pectoral fins in both sharks and body fish are Lateral, which refers to them being located on the sides. Ventral would mean that the fins are on the bottom of the fish, which is not true.


What is the top fin on the fish called?

The fin on the top/back of all fish is called the "Dorsal Fin."