He is mentioned by Ovid as a writer of love poetry associated with Catullus, Calvus and Cinna.
[1] According to the 4th-century AD grammarian Servius, he was a "very bad poet" who wrote in praise of the triumvir Mark Antony and was a detractor of Virgil.
In the quotation below, Cicero is saying that Sextus Pompeius (Pompey the Great's son) should be allowed to reclaim his father's property which had been seized by Antony: More than 50 years later Ovid (Tristia 2.435), in a list of writers of risqué Latin love poetry, mentions a poet Anser in association with Catullus and Catullus's friend Calvus: Putting this evidence together with the information given by Servius (see below) that the poet Anser was a supporter of Mark Antony, it is conjectured by many scholars that he was one of the Ansers mentioned by Cicero, and that he was perhaps gifted an estate in the Falernian region in Campania by his patron.
He makes a second mention of the poet in his comment on Virgil's Eclogue 9, 35–36, in which a young herdsman Lycidas says this about his skill in poetry: Commenting on this line, Servius wrote: "He is alluding to a certain Anser, a poet of Antony's, who used to write praises of him (i.e. of Antony), and for this reason Virgil criticised him.
Propertius (2.34.83–84), in a passage apparently imitating the lines from Eclogue 9 quoted above, also contrasts a swan and a goose, commenting on the latter's indocto carmine 'unlearned song'.