- Source: List of cartilaginous fish of Sri Lanka
Sri Lanka is a tropical island situated close to the southern tip of India. The diversity of fish fauna within the inland waterways and around the island is very high considering the small size of the island.
Class Chondrichthyes - Cartilage fishes
Among the marine fishes, sharks and batoids (rays and skates) form a considerable diversity. A preliminary checklist of sharks around Sri Lanka was compiled by marine biologist, ornithologist, astronomer and well known diver Rex I. De Silva in 1985. It is cited as the first most comprehensive catalogue to Sri Lankan cartilage fishes. On 2016 May, he published the Illustrated Guide of Sharks of Sri Lanka. According to De Silva, there are 60 sharks species and 30 rays and skates found around the coast of Sri Lanka.
Sharks are a group of fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. Modern sharks are classified within the clade Selachimorpha (or Selachii) and are the sister group to the rays.
The following list of shark species recorded from the territorial waters of Sri Lanka.
= Order Hexanchiformes - primitive sharks
=Family Hexanchidae - cow sharks
= Order Squaliformes
=Family Centrophoridae - gulper sharks
Family Dalatiidae - kitefin sharks
Family Echinorhinidae - bramble sharks
Family Somniosidae - sleeper sharks
= Order Orectolobiformes - carpet sharks
=Family Hemiscylliidae - bamboo sharks
Family Stegostomatidae
Family Ginglymostomatidae - nurse sharks
Family Rhincodontidae
= Order Lamniformes - mackerel sharks
=Family Alopiidae - thresher sharks
Family Odontaspididae - sand sharks
Family Pseudocarchariidae
Family Lamnidae - white sharks
Family Megachasmidae - megamouth
= Order Carcharhiniformes - ground sharks
=Family Scyliorhinidae - catsharks
Family Proscylliidae - finback catsharks
Family Triakidae - houndsharks
Family Hemigaleidae - weasel sharks
Family Carcharhinidae - requiem sharks
Family Sphyrnidae - hammerhead sharks
Batoidea is a superorder of cartilaginous fish commonly known as batoids or rays, but it also includes the skates and sawfishes. Approximately 560 species are described in thirteen families. Batoids are in the fish subclass Elasmobranchii along with sharks, as they are closely related. Rays are distinguished by their flattened bodies, enlarged pectoral fins that are fused to the head, and gill slits that are placed on their ventral surfaces.
The following list of rays and skates species recorded from the territorial waters of Sri Lanka.
= Order Pristiformes
=Family Pristidae - carpenter sharks
= Order Torpediniformes - electric rays
=Family Narkidae - sleeper rays
= Order Myliobatiformes - sting rays
=Family Myliobatidae - eagle rays
Family Dasyatidae - whiptail stingrays
Family Gymnuridae - butterfly rays
Subfamily Mobulidae - devil rays
References
Rex I. De Silva (1984–1985). "The Sharks of Sri Lanka – A Key to the Different Species and a Preliminary Checklist". Ceylon Journal of Science. Biological Sciences. 17–18: 56–66. Retrieved 2014-07-28.
"Lanka among world's top 20 shark killers | The Sundaytimes Sri Lanka". sundaytimes.lk. Retrieved 2014-07-28.
http://www.divesrilanka.com/Fauna-Sharks.html
De Silva, R. I. 2015. The Sharks of Sri Lanka. Colombo. Field Ornithology Group of Sri Lanka. https://sites.google.com/site/booksharksofsrilanka/home/
Ebert, D.A., De Silva, R.I. and Goonewardene, M. First Record of a Dwarf False Catshark (Carcharhiniformes" Pseudotriakidae) from Sri Lanka. LORIS 27 (5 and 6) pp. 63–64.
Kata Kunci Pencarian:
- List of cartilaginous fish of Sri Lanka
- Manta ray
- List of threatened rays
- Sixgill stingray
- Fish head
- Stripenose guitarfish
- Hooktooth shark
- Clubnose guitarfish
- Sawfish
- List of longest-living organisms
