the males have a sword like tail
and females dont.
When they start having offspring.
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.
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 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
It's a fish.
yes
Swordfish, swordtail
Her tummy will be smaller.
The antonym of the noun 'gender' is genderlessness, a word for the state of having no gender.