Reference Article

from Wikipedia, the free encyclopedia

Fish

Fish are aquatic vertebrates that are typically cold blooded, covered with scales, and equipped with two sets of paired fins and several unpaired fins.

Fish are abundant in the sea and in freshwaters, with species being known from mountain streams (e.g., char and gudgeon) as well as in the deepest depths of the ocean (e.g., gulpers and anglerfish).

Fish account for more than half of the known vertebrates.

There are at least 24,600 known species of fish, of which over 23,000 are bony fish, with the remainder being about 850 sharks, rays, and chimeras and about 85 hagfishes and lampreys.

They range in size from the 16 m (51 ft) whale shark to a 8 mm (just over 1/4 of an inch) long stout infantfish.

They are of tremendous importance as food for people around the world, being either collected from the wild or being farmed in much the same way as cattle or chickens.

Note: This article excerpts material from the Wikipedia article "Fish", which is released under the GNU Free Documentation License.

See the following related content on ScienceDaily:


Related Videos

last updated on 2015-04-01 at 11:55 pm EDT

Australia: From Tuna Hunter to Sushi Saver

Australia: From Tuna Hunter to Sushi Saver

Deutsche Welle (Apr. 30, 2012) Bluefin tuna are threatened by extinction as the global appetite for the fish soars. A fishing ban is unlikely, so one solution is to breed the fish in underwater cages. But they're not easy to rear in captivity. In Australia, German-born Hagen Stehr is working to mimic natural living conditions of the fish in his onshore farm. The idea is to create an artificial model of the journey to their spawning grounds in order to trick the fish into reproducing.
Powered by NewsLook.com
Recycling Seafood: Oil From Fish Waste

Recycling Seafood: Oil From Fish Waste

Deutsche Welle (June 23, 2013) Leftovers from the fish industry might become a valuable raw material in the future. A German company has developed a system for recycling shrimp shells and other fish waste to create oils for the food production industry. The oils are rich in omega-3 fatty acids, which help prevent cardiovascular problems. The aim is to minimize waste from the fish-processing industry. Other potential leftovers are turned into a powder that is high in protein and may have anti-inflammatory properties.
Powered by NewsLook.com
Fishing Net Technology a Big Catch for New Zealand

Fishing Net Technology a Big Catch for New Zealand

Reuters (Oct. 8, 2013) New commercial fishing technology from New Zealand may soon put an end to the global problem of bycatch, where non-targeted species are caught up in the nets of commercial fishermen. Called "Precision Seafood Harvesting", the technology allows smaller fish to escape while keeping targeted fish alive and fresher much longer. Elly Park reports.
Powered by NewsLook.com
Hunting Flying Carps With Bows and Arrows

Hunting Flying Carps With Bows and Arrows

AFP (July 12, 2012) Shooting a fish flying through the air with a bow and arrow isn't as hard as you would think. At least, not when it's a 20 pound Asian carp and there are so many that the fish you hook wasn't necessarily the one you aimed for.
Powered by NewsLook.com

Related Stories


Share This



Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins