Most of the time you can't. Dwarf Puffers are the only species I know of off the top of my head that can be told apart by eye.
With Dwarf Puffers- Males have "wrinkles" around their eyes and are brighter color then the females.
-Hannah-
GreenSpottedPuffer.net
Goldfish reproduce via external fertilization so they never are pregnant.
Mouth brooders will have an enlarged mouth, most of the time you can see from that, but all fish are different, and remember many fish lay eggs
Puffer fish amplify there mass when frightened. If it is constantly swollen, it may be pregnant. Puffer fish also will have yet tighter skin.
Fish do not experience pregnancy, they lay eggs.
The fish will have a noticeable black dot on it's side
Yes, mosquito fish eat duck weed
guppies stay pregnant for about a month before giving birth, other fish take longer, and others lay eggs (don't get pregnant). depends on the fish
no fish should be pregnant before a year
It mean's your brain was thinking about fish while falling asleep and focused on it.
sea horse
12 days.
snails,mosquito fish,frogs, mosquito that is all i know
A mosquito fish mainly feeds on mosquito larvae in the wild but in captivity a mosquito fish eats it's fry or leaves off of plants
When you hold the fish it will say what kind its status(which will say pregnant) and age
the fish will have dots
no it is a decomposer , it drinks blood
Yes, mosquito fish eat duck weed
Mosquito larvae
Mosquitofish (one word) is a nickname giving to a species of fish (Gambusia) that feed on mosquito larvae and pupae.
The female has a triangular anal fin. In the male this fin is elongated into a long point. This fin carries milt (sperm) like a penis and is called a "gonopodium".
A mosquito fish is a consumer. It is consumer because it eats elodea or other plants. Mosquito fish are herbivores. Meaning they only eat plants.
Larger Fish, Yabbies