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Platycephalus indicus

 

 

PLATYCEPHALIDAE
flatheads

  Platycephalus indicus
(Linnaeus, 1758)

Relevant synonyms
None

Misidentification
None

Meristic formula
D, X + 13; A, 13; P, 18-20; V, I + 5; LL, 67-84; GR, 8-11

 photo : John E. Randall    

SHORT DESCRIPTION
Body elongated with depressed head. The first dorsal fin barely connected to the second part, its first and last spines separate from the remaining spines. Soft rays of dorsal and anal fins moderately incised. Caudal fin truncated. Pectoral fin thoracic. Large head (2.9-3.2 in SL) with smooth bony ridges. Lower jaw projected. Small teeth in both jaws. Vomerine teeth in a single transverse patch. Eye dorsally situated. Scales ctenoid.

color : back brown grey with whitish belly. Several dark bars on the back of most specimens. Numerous dark spots and blotches on pectoral and pelvic fins. Two (rarely, three) distinct black stripes on caudal fin.

size : common 30-50 cm (max. 70 cm).

DISTINGUISHING CHARACTERISTICS
Other platycephalids: less than 65 scales in lateral line; two separate vomerine teeth patches.
Scorpaenidae: clearly continuous dorsal fin.
Triglidae: three lowermost pectoral rays detached.
Callionymidae: much smaller species; pointed snout with small mouth; no spiny ridges on the head.

BIOLOGY / ECOLOGY
Feeds mainly on crustacean and fish. Hunts by "sit and wait" method. Eggs and larvae pelagic.

habitat : benthic on sandy or muddy substrate to depth of 40 m. Euryhaline species reported to penetrate estuaries.


1st MEDITERRANEAN RECORD
Israel, 1953.


DISTRIBUTION
Worldwide : wide Indo-Pacific, Red Sea to eastern Africa, south to Durban and Madagascar to Japan and northern Australia. Mediterranean : recorded first in Israel (Ben Tuvia, 1953a); successively recorded in Egypt (Krefft, 1963) and Lebanon (Mouneimne, 1977).

ESTABLISHMENT SUCCESS
Rare. Several specimens were collected from trawl until the late 1970's; since that time no specimens have been recorded.

speculated reasons for success :
-


MODE OF INTRODUCTION
Via the Suez Canal.


IMPORTANCE TO HUMANS
None.


KEY REFERENCES

  • Ben-Tuvia A., 1953. Mediterranean fishes of Israel. Bulletin of the Sea Fisheries Research Station, Haifa, 8: 1-40.
  • Krefft G., 1963. Platycephalus indicus (L.), 1758, ein neues Faunenelement der ägyptischen Mittelmeerküste. Archiv für Fischereiwissenschaft, 14 (3): 148-152.
  • Mouneimne N., 1977. Liste des poissons de la côte du Liban (Méditerranée orientale). Cybium, 1: 37-66.

FEEDBACK / COMMENTS TO AUTHORS



Last update of the species sheet:
March 2001

©ciesm 2002