In DS9 "Heart of Stone":
SISKO: I see you've put in a request to reassign Ensign Vilix'pran from cargo inspection.
BASHIR: I think that would be best. Given his condition, I don't want him coming in contact with any hazardous materials.
SISKO: His condition?
BASHIR: Vilix'pran is budding. His buds are undergoing individuation in just over a month.
SISKO: You mean he's pregnant?
SISKO: Reassignment granted. I'll have make sure I offer my congratulations to the ensign next time I see him.
BASHIR: O'Brien and I are throwing him a baby shower in a couple of days. I think it would mean a lot to him if you were there.
SISKO: Are you getting him anything?
BASHIR: O'Brien's building him a hatchling pond and I've put an order in with Garak for some new baby clothes.
SISKO: Count me in.
BASHIR: Aye, sir
It's kind of a funny conversation because in our species this would normally a be a conversation between females not males. Sisko and Bashir both use male pronouns to refer to this person implying he is male. Bashir uses the term individuation implying it's asexual reproduction. Bashir also refers to a hatchling pond which would infer this person is possibly amphibious.
In a later DS9 episode "Apocalypse Rising" we learn that he's budding again and litters are generally between 2 and 12 offspring.
In DS9 episode "Business As Usual" Jake Sisko is babysitting the hatchlings and needs to make sure their wings don't get tangled.
Do we know what species Vilix'pran is? Do we know anything about him and his species other than what I mentioned? Do we know what they look like?
STU or EU information is fine. If you find a picture of him please post it.