Fish parasite? Gymnodoris nigricolor

March 21, 2000
From: Atsushi Ono


Dear Bill
This dorid is a parasite on some species of gobies. I am pretty sure this is Gymnodoris nigricolor Baba,1960. This goby is Amblyeleotris steinitzi (Klausewitz).
I have never seen G. nigricolor crawling, it is always parasitic on gobies.
They are about 6 to 8mm long, found 22m depth.

Sincerely,
Atsushi Ono

ononini@cosmos.ne.jp

Ono, A., 2000 (Mar 21) Fish parasite? Gymnodoris nigricolor. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/2131

Dear Atsushi,
Thanks for the wonderful photos. Bob Bolland has a series of photos of this remarkable association between a nudibranch (Gymnodoris nigricolor) and fish (gobies).

I remember when I first saw an article on this association, I thought perhaps the Gymnodoris had got 'spiked' on the fish after collection. It is a remarkable relationship which is now considered to be a parasitic rather than symbiotic relationship.
Best wishes,
Bill Rudman.

Rudman, W.B., 2000 (Mar 21). Comment on Fish parasite? Gymnodoris nigricolor by Atsushi Ono. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/2131

Related messages

  1. Full house - goby, shrimp & Gymnodoris
    From: Mary Jane Adams , December 22, 2001
  2. Eggs of Gymnodoris nigricolor
    From: Bob Bolland, May 1, 2001

Show factsheet and all related messages