Keeping a parakeet and a finch together would be a very, very bad idea. The parakett is a hookbill with a very strong beak and could easily kill the little finch. Especaially in a small cage. Even if the finch wasn't killed, he would be under constant stress from having to live with a much stronger and aggressive bird. I would NOT attempt this.
you don't
Yes they can because they are the same specias so i have one and it works its eather they are zebra finch, guldian finch and a scoity finch thats the finch they make together,
YES
if you want babies
the female cant lay egg without the male
size
Male zebra finches typically have brighter and more colorful plumage, with orange cheek patches, while females have duller coloring. Additionally, males typically have a thicker bill and sing more frequently than females. DNA or surgically probing under the feathers can definitively determine the sex of a zebra finch.
A zebra finch is a small Australian weaverbird, Latin name Taeniopygia guttata, which has markings similar to a zebra.
Well, The Male Zebra Danio are usually "Smaller and Slimmer" while the Females are Bigger especially when they are going to have fry.
A zebra finch can live up to 5 to 7 years if its in captivity.
Zebra, zebra finch
yes they can, as ours laid one last night lol