Nymphon brevirostre is a species of sea spider first described by George Hodge in 1863.

[2] Early life stage morphology White, translucent or reddish, occasionally with violet bands.

Male specimens carry the eggs on specially designed appendages (2).

The species inhabits the littoral and sublittoral zone to a depth of 60m and occurs amongst hydroids.

The species is able to detect the chemical cues of different hydroids such as Dynamena pumila, Laomeda loveni, Tubularia larynx and Alcyonium digitatum (5).