yes it is....it is very popular for freshwater aquariums
= Xiphophorus is a genus of freshwater fish in family Poeciliidae of order Cyprinodontiformes. The type species is X. hellerii, the green swordtail.=
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.
Swordtail freshwater tropical or what? Freshwater ones don't lay eggs they give birth to live fry you can tell when they are pregnant because of the fact they get fatter and if you look at the stomach area you can see black dots.
There are guppies and mollies.
Tropical fish flakes
Swordfish, 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.
The Xiphophorus helleri known also as swordtail is one of the impressive fish among the livebearers. Its tail look like a sword, his native color was metal green but today we can see swordtails in many varieties such as green, orange, yellow and the most common is the red swordtail. It requires 10 gallon tank and up, even though they can handle themselves with other fish don't keep them with tropical fish big enough to eat them, weekly water changes are needed, will appreciate plants as a hiding places in their tank.
When they start having offspring.
Loaches are freshwater fish, for example, the clown loach which is a freshwater fish.