There are guppies and mollies.
It's a fish.
Swordtail is not a mammal, it's a fish although it gives birth. Another example like Swordtail is Guppy. Guppy gives birth but it's a fish.
A Swordtail is a type of fish that has a sword shape on their tail. Males have them but females don't.
Tropical fish flakes
sharks
Swordfish, swordtail
yes it is....it is very popular for freshwater aquariums
Yellow Swordtail
A swordtail is a tropical fish and a goldfish is not. The swordtail would need a higher temp. than the goldfish. Depending on where you live it probably wouldn't survive the winter.
When they start having offspring.
If the fish is more red than orange it could be a red wag swordtail or even a platy. well... male- all orange with a line of black on the under side of the tale is a xiphophorus helleri swordtail from the southern mexico, Guatemala
no it will not but it would attack if it or it's babies are threatened