Trimma helenae Winterbottom, Erdmann & Cahyani, 2014
Helen’s pygmygoby
Helen’s pygmy goby
Trimma helenae
photo by Erdmann, M.V.

Family:  Gobiidae (Gobies), subfamily: Gobiinae
Max. size:  2.01 cm SL (male/unsexed); 2.02 cm SL (female)
Environment:  benthopelagic; marine; depth range - 32 m
Distribution:  Western Pacific: Indonesia.
Diagnosis:  Dorsal spines (total): 7-7; Dorsal soft rays (total): 8-8; Anal spines: 1-1; Anal soft rays: 8-8. This species is distinguished by the following characters: pectoral fin rays unbranched; nasal capsule flushed with the dorsal surface of the snout and a posterior nasal opening in the form of a simple pore without a raised rim; 3 cycloid scales in the posterodorsal part of the cheek; cycloid scales in the midline and sides of the nape; colour pattern of fresh specimen - with an anterior yellow and posterior red half of the body, no dark spot or blotch over the hypural region, and with 4 small white spots on the dorsal and ventral midlines of the caudal peduncle (Ref. 94948).
Biology: 
IUCN Red List Status: Data deficient (DD); Date assessed: 07 September 2021 Ref. (130435)
Threat to humans:  harmless
Country info:  Type locality. Known from four specimens collected from SE lagoon of Penemu Island (Fam Islands group) off the southwest coast of Waigeo, Raja Ampat (West Papua Province).


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