Vanderhorstia nannai Winterbottom, Iwata & Kozawa, 2005

Moon-spotted shrimp goby

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Actinopterygii \| Perciformes \| Gobiidae \| Gobiinae
Synonyms	... more
Common names	... more

You can sponsor this page

Upload your photos and videos
| All pictures | Google image |

Image of Vanderhorstia nannai (Moon-spotted shrimp goby)

Picture by Winterbottom, R.

Add your observation in Fish Watcher

No AquaMaps available for this species.

Main reference

Winterbottom, R., A. Iwata and T. Kozawa. 2005. (Ref. 53948)
Other references | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 3.3 cm SL male/unsexed; (Ref. 53948); 2.98 cm SL (female)

Environment

Demersal; marine; depth range 0 - 15 m (Ref. 53948)

Climate / Range

Tropical

Western Pacific: Palau and the Philippines.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 7; Dorsal soft rays (total): 11; Anal spines: 1; Anal soft rays: 11; Vertebrae: 26. Diagnosis: Vanderhorstia nannai shares with Vanderhorstia papillo the elongated 5" (upper lobe) and 9" (lower lobe) branched caudal fin rays. It differs from Vanderhorstia papillo in having more lateral scales (41-45 vs. 27); no scales in the predorsal midline (vs. 11); a unique color pattern (off-white background with large yellow spots along the midlateral body vs. such spots absent, and absence of four dark gray brown saddles on body vs. present); adults with both the third and fourth dorsal spines elongate; more lower gill rakers on the first arch (16-17 vs. 10); fewer pseudobranch filaments (6-7 vs. 9); a single papilla in row c on the cheek (vs. 4) and row b not interrupted (vs. in two sections) (Ref. 53948). Description: Dorsal fin rays VI + I,11, all rays branched. Anal fin rays I, 11 (once 12, where last pterygiophore supports bases of three rays), all rays branched. Pectoral fin rays 16-17-18 (16.9), with one to three of the uppermost and the lowermost rays unbranched. Pelvic fin rays I, 5: segmented caudal fin rays usually 9 dorsal + 8 ventral (= 17; once 15, twice 16), including 6-7 (6 twice) dorsal + 6-7 (7 once) ventral branched rays; dorsal unsegmented (procurrent) caudal fin rays 6-810 (7.4); ventral unsegmented (procurrent) caudal fin rays 5-6-8 (6.6). Longitudinal scales 41-42-45 (42.8); transverse scales from anal fin origin anterodorsally to first dorsal fin base 12-14-15 (13.2); transverse scales from anal fin origin posterodorsally to second dorsal fin base 11-13 (12.1); predorsal scales absent in midline. Scalation beginning above pectoral fin base and curving dorsally and then posteriorly adjacent to base of first dorsal fin, reaching fin base at about second dorsal fin origin. Circumpeduncular scales 10-12 (11.4). No scales on pectoral base. About seven rows of scales on prepelvic region in midline. Gill rakers 34 + 16-19 (3.4 + 16.9) on outer surface of first arch and 2-3-4 + 13-14-15 (2.9 + 14.1) on inner surface of first arch; dorsalmost few outer rakers on lower limb longer than gill filaments; short, stubby, dentate gill rakers on inner surface of first arch. Pseudobranchial filaments 6-7-8 (6.4). Vertebrae 10 + 16 = 26. Dorsal pterygiophore formula 3 (2,2,1,1); epural 1; anal fin pterygiophores anterior to first haemal spine 2; pleural ribs on third to tenth precaudal vertebrae; anterior articular head of hyomandibular separated from posterior margin of orbit by a distance equal to two-thirds pupil diameter. Moderately elongate and compressed body. Slightly compressed head, its width 65.6-84.1-87.7 (79.6) % of depth. Short snout, its length slightly less than eye diameter; snout does not protrude beyond upper lip. Large, dorsolateral eye, its diameter 24.3-24.6-27.6 (25.5)% of head length: interorbital space narrow, its width narrower than pupil diameter and 8.2-11.9-13.7 (10.9)% of head length. No distinct, deep trough around eyes from interorbital to postorbital regions; no cutaneous ridge along dorsal midline of nape. Oblique gape, forming an angle of about 50° with body axis. Lower jaw projecting anteriorly beyond upper jaw; posterior end of jaws reach to below anterior end of pupil; jaw length 35.6-44.1-44.9 (38.1) of head length. Anterior nasal opening is a short tube without fleshy flap at tip of tube; posterior nasal opening a large pore, located just posterior to midpoint between anterior nasal opening and anterior margin of eye, its posterior margin almost reaching anterior margin of orbit in lateral view. Tip of tongue is blunt, with slight medial point anteriorly, free from floor of mouth. Posteroventral margin of the lower lip entire, no mental flap on chin. The gill opening is wide, extending anteriorly to vertical line through posterior margin of eye; gill membranes attach to very narrow isthmus; no distinct free rear margin. There are no fleshy projections on the lateral wing of the shoulder girdle and no bony projections along the posterior margin of the preopercle. The caudal peduncle is moderately slender (depth 47.752.2-55.5 (49.6)% of caudal peduncle length). First dorsal fin higher than second dorsal fin: first dorsal fin close to, but not connected to, second dorsal fin by membrane; third spine of first dorsal fin longest 117.6175.6-232.4 (174.0)% of second spine in length, elongate, filamentous, reaching posteriorly to base of middle of second dorsal fin when adpressed; fourth spine usually elongate, 43.6-92.6 (63.5)% third spine; all dorsal fin spines slender and flexible; tenth segmented ray of second dorsal fin longest, extending to caudal fin when adpressed. Origin of the anal fin on vertical with base of first segmented ray of second dorsal fin; height of anal fin slightly lower than second dorsal fin; anal fin spine slender and flexible; last two segmented rays of anal fin longest, extending to caudal fin when adpressed. Fork of the caudal fin formed by elongations of branched caudal fin rays. Upper lobe formed by lower branch of fourth ray, both branches of fifth ray, and upper branch of sixth ray; lower lobe by lower branch of eighth ray, both branches of ninth ray, and upper branch of tenth ray. Seventh branched ray 57.8-68.7-89.0 (74.9)% of fifth ray length. The pectoral fin nearly lanceolate, reaching posteriorly to vertical line through base of second to third segmented ray of second dorsal fin; middle pectoral fin rays branched, with 1-3 uppermost and lowermost rays unbranched. Origin of pelvic fin slightly anterior to a vertical line through origin of first dorsal fin; pelvic fins joined medially by well-developed frenum (between spines) and interradial membrane (between innermost segmented rays); pelvic frenum moderately thin, with smooth posterior margin; all segmented pelvic fin rays branched; rays 1-4 with 2-3 sequential branches, fifth branched twice dichotomously; the fourth and fifth segmented rays subequal in length, reaching posteriorly to base of anal spine when adpressed. Most of the body and caudal fin base are covered by ctenoid scales with peripheral cteni; cycloid scales on belly and on body anterior to an arc passing anteriorly from bases of first few rays of second dorsal fin to midlateral septum below middle of first dorsal fin, then curving down and backwards to anal fin origin. Scales in the pre-pelvic region usually cycloid, some may be ctenoid; scales overlying basal region of caudal fin a mix of cycloid and ctenoid scale types. There are no scales on nape or pectoral fin base. Teeth of both jaws unicuspid; upper jaw with outer row of spaced, enlarged, curved caniniform teeth and an irregular inner row of small similar teeth, teeth near symphysis enlarged and point posteriorly; lower jaw with 1-3 enlarged, curved, spaced, caniniform teeth, two irregular rows of smaller teeth medially grading into a single row posteriorly, an innermost row of 2-3 much enlarged curved, spaced canines at bend of dentary; no teeth on vomer or palatine. Cephalic sensory systems: pores bilateral except where stated otherwise. Anterior oculoscapular-canal pores with nasal, anterior interorbital (medial), posterior interorbital (medial), supraorbital, anterior otic, posterior otic and intertemporal; posterior oculoscapular-canal pores with anterior and posterior temporal; three preopercular canal pores; right and left sides of anterior oculoscapular canals fused medially in interorbital space. All cephalic sensory-papillae rows uniserial or consisting of a single papilla, not forming multiple rows: relatively reduced longitudinal pattern of sensory papillae rows on cheek; row a short and reduced, of three to four widely spaced sensory papillae: row b continuous, extending from ventral most part of row a two-thirds the distance to preopercle; row c extends posteriorly almost to a vertical line through anteriormost part of rows a; row d extends slightly posterior to a vertical line through the single papilla representing row cp'; row f transverse across chin just posterior to lip, consisting of one to two papillae on each side (Ref. 53948).

Based on a photo taken from the Philippines, it is reasonable to assume that it is associated with burrows made and occupied by alphaeid shrimps (albeit no visible evidence of the shrimp in the image), as is the case in all it congeners for which information is available (Ref. 53948).


IUCN Red List Status (Ref. 57073)	Threat to humans
Not Evaluated	Harmless

Human uses


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

Tools
Biogeographic modelling \| E-book \| Field guide \| Length-frequency wizard \| Life-history tool \| Point map

Special reports
Check for Aquarium maintenance \| Check for Species Fact Sheets \| Check for Aquaculture Fact Sheets

Download XML
Summary page \| Point data \| Common names \| Photos

Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Low vulnerability (10 of 100)	Very high

Entered by Capuli, Estelita Emily

Modified by Bailly, Nicolas

Back to Search

Fish Forum

Comments & Corrections

Sign our Guest Book

FishBase mirror site : Paris, France

Page last modified by : elaxamana, 15 July 2009

Custom Search