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That depends on the fish (i.e. whether it's an egg layer or a live-bearer). Guppies and swordfish (for instance) develop a dark spot on their lower abdomen which swells as the babies develop. These fish are live-bearers. I breed fresh water angelfish. They lay their eggs in long swaths along plants or a favorite rock. I've placed several large pieces of slate in the aquarium that they seem to like to lay their eggs on. The female will swim up the slate and deposit her eggs and the male swims up behind her and fertilizes them. In a few days the babies hatch but stay "stuck" to the slate for about 72 hours until they're big enough to start swimming on their own. The adults will watch over them and protect them. It's kinda cool to watch. The babies surround the adults like a cloud. You know the female's pregnant because she'll start cleaning the slate in preparation to laying the eggs. It's difficult to actually determine that she's got eggs because she's so big to start with.
What else can I help you with?
Can my fighting fish get pregnant by some other fish?
No, unless its of the same breed
How do you know a fish is pregnant in fish tycoon?
When you hold the fish it will say what kind its status(which will say pregnant) and age
How do you know if a rosy red fish is pregnant?
the fish will have dots
How do you know if your fighting fish is Pregnant?
Depends on the fish. Some lay eggs immediately during fertilization, so they aren't ever "pregnant". On livebearers like guppies, a swollen abdomen or enlarged gravity spot are the most common signs.
How do you know if a Siamese Fighting Fish is dead?
When it is floating not swimming.
How do you know if a fighting fish is hungry?
Simple observation. You will either see them fighting or see the damage on the fish that indicates they have been fighting.
Would fighting fish fight with platys?
No, fighting fish (Bettas) are only interested in fighting with other fighting fish.
How do you spell betta fish?
Exactly as you spelled it in your question; a Betta fish is also known as a Siamese Fighting Fish.it is spelled "Betta", or its other name, "Siamese Fighting Fish." I know alot about Betta's. :D
Can female fighting fish mate with another fighting fish?
Of course they can. How else would we have fighting fish.
How do you know if my silver dollars red hooks fish are pregnant?
Silver dollars do not get pregnant. They are egg layers.
Can you leave the Siamese fighting fish male and female together if she is pregnant?
The only time a male and female betta or fighting fish should be together is when they breed. Otherwise it's better to separate them before one or the other dies.
How much memory do Siamese fighting fish have?
I do not know. I would highly consider asking you local fish veterinarian.
