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.
It's a fish.
Green swordtail was created in 1848.
A Swordtail is a type of fish that has a sword shape on their tail. Males have them but females don't.
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.
yes
Tropical fish flakes
Her tummy will be smaller.
yes
Swordfish, swordtail
Yes
they proctect the body if is danger
There are guppies and mollies.