Wednesday, 19 December 2012

Sailfish/Atlantic sailfish/Indo Pacific sailfish


Name
The Atlantic sailfish, Istiophorus albicans, is a species of marine fish in the family Istiophoridae of the order Perciformes. 

Location
Albania, Algeria, Angola, Anguilla, Antigua Barb, Argentina, Aruba, Ascension I. Bahamas, Barbados, Belize, Benin, Bermuda, Bosnia Herzg, Br Virgin Is, Brazil, Cameroon, Canary Is, Cape Verde, Cayman Is, Colombia, Congo, Congo Rep, Costa Rica, Cote d'Ivoire, Croatia, Cuba, CuraƧao I. Cyprus, Dominica, Dominican Rp, Egypt, Eq Guinea, Fr Guiana, France, Gabon, Gambia, Georgia, Ghana, Gibraltar, Greece, Grenada, Guadeloupe, Guatemala, Guinea, Guinea Bissau, Guyana, Haiti, Honduras, Israel, Italy,Jamaica, Lebanon, Liberia, Libya, Madeira Is, Malta, Martinique, Mauritania, Mexico, Monaco, Montserrat, Morocco, Namibia, NethAntilles, Nicaragua, Nigeria, Panama, Portugal, Puerto Rico, Romania, Russian Fed, Saint Lucia, Sao Tome Prn, Senegal, Serbia, Sierra Leone, Slovenia, South Africa, Spain, St Helena, St Kitts Nev, St Vincent, Suriname, Syria, Togo, Trinidad Tob, Tunisia, Turkey, UK, Ukraine, Uruguay, US Virgin Is, USA, Venezuela, West Sahara.

Spawning ground/season
Spawning occurs from January to December in Guinea and Eastern Mediterranean Sea. April to September in Cuba and USA located offshore beyond the 100 fathom isobath

Reproduction
Dioecism as in females and males are separated by gender, external fertilization and are nonguarders of their eggs, open water/substratum egg scatterers, female may shed up to 4.8 million eggs in three batches during one spawning season, migratory in nature like salmon either following diet or reproductive needs, Sailfish grow extremely quickly, reaching a length of 4-5 feet in just a single year. They can live as long as 16 years

Habitat
Subtropical 21°C - 28°C, pelagic swimmers, found in Aegean Sea, Atlantic Ocean, Benguela Current, Canary Current, Caribbean Sea, East Brazil Shelf, Guinea Current, Gulf of Mexico, Iberian Coastal, Mediterranean Sea, North Brazil Shelf, Northeast U.S. Continental Shelf, Patagonian Shelf, South Brazil Shelf, Southeast U.S. Continental Shelf.

Appearance
The sailfish has two dorsal and anal fins. Its first dorsal fin is large and fan-like, being much taller than the width of the body. This large fin runs most of the length of the body and provides the inspiration for the name, sailfish. The first anal fin is set far back on the body, and the second dorsal and anal fins roughly mirror one another in size and shape, with both being short in comparison to the sail-like first dorsal fin. The pectoral and pelvic fins are long with the pelvic fins almost twice as long and nearly reaching the origin of the first anal fin. The pelvic fins have one spine and multiple soft rays fused together, The sailfish bears a pair of grooves along each side of its body into which the pelvic fins can be depressed, greatly decreasing the fish’s drag through the water at speed. The strongly forked tail fin has double keels and caudal notches on the upper and lower surfaces, which act as hydrofoils, Body colour is variable depending upon the fish’s level of excitement. The body is dark blue dorsally and white with brown spots ventrally. About 20 vertical bars, each consisting of many light blue dots, are present on each side. The fins are all generally blackish blue. The anal fin base is white. The first dorsal fin (the sail) contains many small black dots, which are more common toward the anterior end of the fin, sailfish’s body is sparsely covered with embedded scales, each ending in a blunt point.

Diet
Greater argonaut, neon flying squid, red flying squid, akaika, and red squid, bar jack, Pacific crevalle jack, Blue runner, Longfin crevalle jack, Blacktip trevally, Crevalle jack, Giant trevally, Horse-eye jack, Black jack, Bluefin trevally, Brassy trevally, False scad, Round scad, Senegal jack, Bigeye trevally, Tille trevally, Cocinero, little tunny, halfbeaks, garfish, ballyhoos, pinfish, needlefish, largehead hairtail, flyingfish, surgeonfish, Atlantic pomfret or Ray's Bream, mahi-mahi or common dolphinfish, flying gurnard or Robin fish, porcupinefish, porcupinefish, snake mackerel, squirrelfish, snaketooth fish, mackerels, tunas, and bonitos, ribbonfish, blanket octopus, Sardines 

Predators
mahi-mahi or common dolphinfish, Brown Noddy, Wideawake Tern.

Edible 
Utilized fresh, smoked and frozen, also used for sashimi and sushi, eaten broiled and baked.

 __________________________________Traits___________________________________
One of the physical traits separating the Istiophorus platypterus to the Istiophorus albicans are the number of Anal spines and Pelvic spines of each individual, platypterus have 2 Anal spines and no Pelvic spines and albicans have no Anal spines and 1 Pelvic spine ,other than location that these fish are found in, there are studies shown that these two species are interbreeding and possibly a 3rd spieces will rise in the near future. unfortunately I could not identify the photo's of the given species in this post as the angle and/or quality is always disrupted in the photography , as you can see from the time spent on this post I'v fallen into the depths, if you can identify the photography in this post please mention it with reason, so I can rearrange the photo's 
thanks in advance.  
________________________________________________________________________

Name
The Indo-Pacific sailfish, Istiophorus platypterus, is a sailfish native to the Indian and Pacific Oceans

Location
Admiralty Is, Amer Samoa, Andaman Is, Australia, Bahrain, Bangladesh, Cambodia, Chagos Is, Chile, China Main, Christmas I. Colombia, Comoros, Cook Is, Costa Rica, Cuba, Djibouti, Easter I. Ecuador, Egypt, El Salvador, Eritrea, Fiji, Fr Polynesia, Galapagos Is, Guam, Guatemala, Hawaii, Honduras, Hong Kong, India, Indonesia, Iran, Iraq, Japan, Jordan, Kenya,Kiribati, Korea D P Rp, Korea Rep, Kuwait, Macau, Madagascar, Malaysia, Maldives, Marquesas Is, Marshall Is, Mauritania, Mauritius, Mexico, Micronesia, Mozambique, Myanmar, N Marianas, Namibia, New Caledonia, New Zealand, Nicaragua, Nigeria, Niue, Oman, Pakistan,Palau, Panama, Papua N Guin, Peru, Philippines, Puerto Rico, Qatar, Reunion, Russian Fed, Ryukyu Is, Samoa, Saudi Arabia, Seychelles, Singapore, Solomon Is, Somalia, South Africa, Sri Lanka, Sudan, Tahiti, Taiwan, Tanzania, Thailand, Tokelau, Tonga, Tuamotu Is, Tuvalu, Untd Arab Em, US Virgin Is, USA, Vanuatu, Viet Nam, Wake I. Yemen.

Spawning grounds/seasons
Spawing occures from January to December in the tropical and sub tropical waters of the pacific ocean 

Reproduction
Dioecism as in males and females are seperated by gender,external fertilization and are nonguarders of their eggs ,openwater substratum egg scatterers ,spawning throughout the year in tropical and subtropical waters of the Pacific with peak spawning occurring in the respective local summer months. Spawning occurs with males and females swimming in pairs or with two or three males chasing a single female. The ripe ovarian eggs are about 0.85 mm in diameter and have a single oil globule, there are no structures on the vitalize membrane and the egg is transparent. Eggs shed from captured female in the Indian Ocean averaged 1.304 mm in diameter.

Habitat
 Oceanic epipelagic species usually found above the thermocline. Most densely distributed in waters close to coasts and islands, Indo-Pacific tropical and temperate waters, western Pacific, eastern Pacific, western Indian Ocean, eastern Indian Ocean. Entered Mediterranean Sea from Red sea via Suez Canal. Highly migratory species. retaining the usage of Istiophorus platypterus for the Indo-Pacific sailfish and Istiophorus albicans for the Atlantic sailfish in recognition of the differences between them. Most likely schools by size. Undergoes spawning migrations in the Pacific.

Appearance
It is dark blue on top with about 20 bluish vertical bars, brown-blue laterally, silvery white underbelly, upper jaw elongated in a form of a spear, first dorsal fin greatly enlarged in the form of a sail and the membrane blue black with numerous dark spots, its front squared off, highest at its midpoint, pelvic fins very narrow, reaching almost to the anus, with 1 spine and 2 rays, body covered with embedded scales with 1 or 2 blunt points blunt at end, lateral line curved above pectoral fin, then straight to base of tail. 

Diet
Anchovies, Bullet Tuna, Frigate Tuna, Mahi-mahi, Pompano dolphinfish, pufferfish, boxfish, sardines, ribbonfish, Conger conger, Brazilian Sardinella, blue runner, flying fish, Porcupinefish, Bigeye scad, Dussumier's halfbeak, Rabbitfish or spinefoots, Round scad, squid, octopi, Indo Pacific Sailfish are opportunistic predators 

Edible 
Utilized fresh, smoked and frozen, also used for sashimi and sushi, eaten broiled and baked.