Female molly fish have a small anal fin below their bellies and males have a modified fin that looks like a short stick. Males also tend to be smaller than females.Continue Reading
Mollies are a live-bearing fish that make an interesting addition to the aquarium. Fish owners who want to breed mollies will need a male and female pair, who hopefully like one another. There are a few different varieties of mollies, but owners can always tell the gender of each molly by checking out their anatomy.
The male molly has a special fin called a gonopodium that is used for fertilizing the female molly. The gonopodium is a modified anal fin that looks like a narrow stick or straw. It may also feature a small section of normal fin tissue. The female molly has a half-moon-shaped anal fin in the same spot as the male sex organ. The sexual organs are fully identifiable at three months of age. This makes it easy to see at a glance if a fish is male or female.
There are a few other gender indicators that owners can look too. Females tend to be larger than males, but males will stay small if placed in a crowded tank. A pregnant female will display a large, tight belly that looks slightly squared as she gets closer to giving birth.Learn more about Aquatic Pets
A dichotomous key for sharks may include body shape, presence of a pelvic fin, number of gill slits or dorsal fins, mouth position, head shape, length of dorsal fin or caudal fin, presence of an anal fin, hornlike appendages near the head and special markings on body. Each dichotomous key differs depending on the species of sharks included.Full Answer >
Some popular female fish names include Angel, Bubbles and Dory. Funny female fish names include Sushi, Wanda, Salt and Kraken. Hippo and Hydra are ironic names for a female fish. Flotsam and Jetsam are good names for both male and female fish. Common types of fish such as the Blobfish, Ladyfish, Medusafish and Barb can also be used as fish names.Full Answer >
There are common tell-tale signs to help in diagnosing if your fish is ill and they are as follows: clamped fins, frayed fins, bloating, enlargement of eyes, erratic swimming, gasping for air at the surface of the water, scraping on plants and filters, loss of appetite, white spots on fins/body, parasites on body, and normally active fish who remain still. Conditions or symptoms may vary.Full Answer >
According to PetPlace.com, fish that are swimming at the top of an aquarium likely do not have enough dissolved oxygen in their water. This problem is also known as hypoxia.Full Answer >