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Characteristics of Sphoeroides parvus

Sphoeroides parvus

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scientific name

Sphoeroides parvus

German Name

Kleiner Sphoeroides

English Name

Least puffer

First characterisation

1969 von Shipp & Yerger

Identification

Fish size

~ 15 cm

Anusfin

7

Breastfin

15-16

Backfin

8

Obere Hälfte und Seiten weisen eine hellgraue bis braune Grundfärbung auf, die mit vielen kleinen Punkten und Flecken durchsetzt ist. Der Bauch ist hell und von einer Punktelinie zur oberen Häflte hin getrennt. Am letzten Drittel des Schwanzes befindet sich ein dunkler Querstreifen.

„A blunt-headed fish with heavy jaws forming a beak of 2 teeth in both upper and lower jaws. Dorsal and anal fins set far back near caudal fin; dorsal fin with 8 soft rays (no spines), anal fin with 7 soft rays (no spines); pectoral fin usually with 15 or 16 rays, pelvic fins absent.Prickles present from the snout to near dorsal fin, and chin to near to near anus ventrally, and present laterally on cheeks and to near level of dorsal fin.Lappets absent. Colour: dorsally and laterally, basal pigmentation is a light grey or brown, with numerous spots and blotches, especially evident on lower flanks, where they forman irrgular row near the ventrolateral body angle; an axil spot present, but is no more intense than other lateral spots and blotches; ventral surface unpigmented.
Size: Common to 100 mm, largest known specimen near 150 mm.“ (Shipp 2002, S. 2002)

 

Sphoeroides parvus:Lebt in der Natur in Küstengewässern und Ästuarien:

„Sphoeroides parvus has irregularly placed spots on lower flanks and lacks lappets. Snout is short and acute. Nostril is paired, and nares are located at ends of short tubes. Interorbital space is relatively broad and slightly flat. Gill slit is arch shaped and slightly shorter than pectoral fin base. Gill rakers are very short and number seven or eight. Measurements are expressed as percent of SL: head length 33%-39%, snout length 17%-19%, eye diameter 6%-11%, interorbital width 4%-6%, pectoral fin length 15%-21%, uniflated body depth 15%-24%. Pectoral fin gas 13 to 16 (usually 14 or 15) rays. Dorsal fin is narrow based and has 8 or 9 (usually 8) rays. Anal fin is similar in shape to dorsal fin and has 6 to 8 rays. Spinules occur dorsally from nasal tube to dorsal fin origin, laterally from cheek to dorsal fin origin, and ventrally from chin to anus. Color is dark olive gray dorsally, with pale green spots and usually dark brown spots and blotches, and white ventrally. If pectoral fin axil is darkly pigmented, it is no darker than spots or blotches on sides." (McEachran (u.a.) 2005, S. 927)


 

 

Watertype

Brackish - Sea water

temperature

23 °C - 26 °C

Fishfood

snails
mussels
crustaceans

Biotop

" (...) in coastal waters, bays and estuaries. It is known from Pensacola, FL, to Yucatán.“ (McEachran (u.a.) 2005, S. 927)

Basin size

110 imp.gal.

Special

„This is the most common coastal/shelf pufferfish of the western Gulf of Mexico. It is extremely abundant on open sandy-mud bottoms, which are heavily trawled
for shrimp. It matures by 100 mm. Although no fishery exists for this species, it is frequently taken as bycatch in shrimp trawls." (Shipp 2002, S. 2002)

"It has not been shown to be toxic, but extensive toxicity studies have not been performed." (Shipp 2002, S. 2002)

"Distribution: Restricted to the western Gulf of Mexico, from the Florida panhandle to the Bay of Campeche.“ (Shipp 2002, S. 2002)


Last updated:

17-05-2008 01:12

Created:

20-04-2007 11:19

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