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Fishes

A fish is any member of a paraphyletic group of organisms that consist of all gill-bearing aquatic craniate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups. Most fish are ectothermic ("cold-blooded"), allowing their body temperatures to vary as ambient temperatures change, though some of the large active swimmers like white shark and tuna can hold a higher core temperature.[1][2] Fish are abundant in most bodies of water. They can be found in nearly all aquatic environments, from high mountain streams (e.g., char and gudgeon) to the abyssal and even hadal depths of the deepest oceans (e.g., gulpers and anglerfish). At 32,000 species, fish exhibit greater species diversity than any other group of vertebrates.[3]

Fish are an important resource for humans worldwide, especially as food. Commercial and subsistence fishers hunt fish in wild fisheries (see fishing) or farm them in ponds or in cages in the ocean (see aquaculture). They are also caught by recreational fishers, kept as pets, raised by fishkeepers, and exhibited in public aquaria. Fish have had a role in culture through the ages, serving as deities, religious symbols, and as the subjects of art, books and movies.

Because the term "fish" is defined negatively, and excludes the tetrapods (i.e., the amphibians, reptiles, birds and mammals) which descend from within the same ancestry, it is paraphyletic, and is not considered a proper grouping in systematic biology. The traditional term pisces (also ichthyes) is considered a typological, but not a phylogenetic classification.

The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than just the prey of arthropods.

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Idő Cím
06:00:00 06:06:06 Schooling Fish - Reef Life of the Andaman - Part 15
06:06:06 06:12:22 Symbiosis & Anemonefish - Reef Life of the Andaman - Part 18
06:12:22 06:16:09 Lionfish, Sea Urchins, Crown of Thorns - Reef Life of the Andaman - Part 17
06:16:09 06:18:55 Filefish & Triggerfishes - Reef Life of the Andaman - Part 12
06:18:55 06:23:50 Fishes Feeding - Reef Life of the Andaman - Part 19
06:23:50 06:29:15 Pufferfishes, Boxfishes & Porcupinefishes - Reef Life of the Andaman - Part 11
06:29:15 06:33:13 Anemone Fishes | Clown Fish | Tropical Marine Life DVD
06:33:13 07:27:43 Diving in Bali
07:27:43 07:30:06 World's Most Amazing Fish 23-3-13
07:30:06 07:31:13 The life of Fish
07:31:13 07:57:12 Cuttlefish and Jellyfish
07:57:12 07:58:41 BBC Life - Flying Fish
07:58:41 08:00:23 AMAZING PICTURES OF AFRICAN CICHLIDS - HIGH QUALITY
08:00:23 08:06:14 Groupers and Big Fish - Reef Life of the Andaman - Part 10
08:06:14 08:12:20 Schooling Fish - Reef Life of the Andaman - Part 15
08:12:20 08:18:36 Symbiosis & Anemonefish - Reef Life of the Andaman - Part 18
08:18:36 08:22:23 Lionfish, Sea Urchins, Crown of Thorns - Reef Life of the Andaman - Part 17
08:22:23 08:25:09 Filefish & Triggerfishes - Reef Life of the Andaman - Part 12
08:25:09 08:30:04 Fishes Feeding - Reef Life of the Andaman - Part 19
08:30:04 08:35:29 Pufferfishes, Boxfishes & Porcupinefishes - Reef Life of the Andaman - Part 11
08:35:29 08:39:27 Anemone Fishes | Clown Fish | Tropical Marine Life DVD
08:39:27 09:33:57 Diving in Bali
09:33:57 09:36:20 World's Most Amazing Fish 23-3-13
09:36:20 09:37:27 The life of Fish
09:37:27 10:03:26 Cuttlefish and Jellyfish
10:03:26 10:04:55 BBC Life - Flying Fish
10:04:55 10:06:37 AMAZING PICTURES OF AFRICAN CICHLIDS - HIGH QUALITY
10:06:37 10:12:28 Groupers and Big Fish - Reef Life of the Andaman - Part 10
10:12:28 10:18:34 Schooling Fish - Reef Life of the Andaman - Part 15
10:18:34 10:24:50 Symbiosis & Anemonefish - Reef Life of the Andaman - Part 18
10:24:50 10:28:37 Lionfish, Sea Urchins, Crown of Thorns - Reef Life of the Andaman - Part 17
10:28:37 10:31:23 Filefish & Triggerfishes - Reef Life of the Andaman - Part 12
10:31:23 10:36:18 Fishes Feeding - Reef Life of the Andaman - Part 19
10:36:18 10:41:43 Pufferfishes, Boxfishes & Porcupinefishes - Reef Life of the Andaman - Part 11
10:41:43 10:45:41 Anemone Fishes | Clown Fish | Tropical Marine Life DVD
10:45:41 11:40:11 Diving in Bali
11:40:11 11:42:34 World's Most Amazing Fish 23-3-13
11:42:34 11:43:41 The life of Fish
11:43:41 12:09:40 Cuttlefish and Jellyfish
12:09:40 12:11:09 BBC Life - Flying Fish
12:11:09 12:12:51 AMAZING PICTURES OF AFRICAN CICHLIDS - HIGH QUALITY
12:12:51 12:18:42 Groupers and Big Fish - Reef Life of the Andaman - Part 10
12:18:42 12:24:48 Schooling Fish - Reef Life of the Andaman - Part 15
12:24:48 12:31:04 Symbiosis & Anemonefish - Reef Life of the Andaman - Part 18
12:31:04 12:34:51 Lionfish, Sea Urchins, Crown of Thorns - Reef Life of the Andaman - Part 17
12:34:51 12:37:37 Filefish & Triggerfishes - Reef Life of the Andaman - Part 12
12:37:37 12:42:32 Fishes Feeding - Reef Life of the Andaman - Part 19
12:42:32 12:47:57 Pufferfishes, Boxfishes & Porcupinefishes - Reef Life of the Andaman - Part 11
12:47:57 12:51:55 Anemone Fishes | Clown Fish | Tropical Marine Life DVD
12:51:55 13:46:25 Diving in Bali
13:46:25 13:48:48 World's Most Amazing Fish 23-3-13
13:48:48 13:49:55 The life of Fish
13:49:55 14:15:54 Cuttlefish and Jellyfish
14:15:54 14:17:23 BBC Life - Flying Fish
14:17:23 14:19:05 AMAZING PICTURES OF AFRICAN CICHLIDS - HIGH QUALITY
14:19:05 14:24:56 Groupers and Big Fish - Reef Life of the Andaman - Part 10
14:24:56 14:31:02 Schooling Fish - Reef Life of the Andaman - Part 15
14:31:02 14:37:18 Symbiosis & Anemonefish - Reef Life of the Andaman - Part 18
14:37:18 14:41:05 Lionfish, Sea Urchins, Crown of Thorns - Reef Life of the Andaman - Part 17
14:41:05 14:43:51 Filefish & Triggerfishes - Reef Life of the Andaman - Part 12
14:43:51 14:48:46 Fishes Feeding - Reef Life of the Andaman - Part 19
14:48:46 14:54:11 Pufferfishes, Boxfishes & Porcupinefishes - Reef Life of the Andaman - Part 11
14:54:11 14:58:09 Anemone Fishes | Clown Fish | Tropical Marine Life DVD
14:58:09 15:52:39 Diving in Bali
15:52:39 15:55:02 World's Most Amazing Fish 23-3-13
15:55:02 15:56:09 The life of Fish
15:56:09 16:22:08 Cuttlefish and Jellyfish
16:22:08 16:23:37 BBC Life - Flying Fish
16:23:37 16:25:19 AMAZING PICTURES OF AFRICAN CICHLIDS - HIGH QUALITY
16:25:19 16:31:10 Groupers and Big Fish - Reef Life of the Andaman - Part 10
16:31:10 16:37:16 Schooling Fish - Reef Life of the Andaman - Part 15
16:37:16 16:43:32 Symbiosis & Anemonefish - Reef Life of the Andaman - Part 18
16:43:32 16:47:19 Lionfish, Sea Urchins, Crown of Thorns - Reef Life of the Andaman - Part 17
16:47:19 16:50:05 Filefish & Triggerfishes - Reef Life of the Andaman - Part 12
16:50:05 16:55:00 Fishes Feeding - Reef Life of the Andaman - Part 19
16:55:00 17:00:25 Pufferfishes, Boxfishes & Porcupinefishes - Reef Life of the Andaman - Part 11
17:00:25 17:04:23 Anemone Fishes | Clown Fish | Tropical Marine Life DVD
17:04:23 17:58:53 Diving in Bali
17:58:53 18:01:16 World's Most Amazing Fish 23-3-13
18:01:16 18:02:23 The life of Fish
18:02:23 18:28:22 Cuttlefish and Jellyfish
18:28:22 18:29:51 BBC Life - Flying Fish
18:29:51 18:31:33 AMAZING PICTURES OF AFRICAN CICHLIDS - HIGH QUALITY
18:31:33 18:37:24 Groupers and Big Fish - Reef Life of the Andaman - Part 10
18:37:24 18:43:30 Schooling Fish - Reef Life of the Andaman - Part 15
18:43:30 18:49:46 Symbiosis & Anemonefish - Reef Life of the Andaman - Part 18
18:49:46 18:53:33 Lionfish, Sea Urchins, Crown of Thorns - Reef Life of the Andaman - Part 17
18:53:33 18:56:19 Filefish & Triggerfishes - Reef Life of the Andaman - Part 12
18:56:19 19:01:14 Fishes Feeding - Reef Life of the Andaman - Part 19
19:01:14 19:06:39 Pufferfishes, Boxfishes & Porcupinefishes - Reef Life of the Andaman - Part 11
19:06:39 19:10:37 Anemone Fishes | Clown Fish | Tropical Marine Life DVD
19:10:37 20:05:07 Diving in Bali
20:05:07 20:07:30 World's Most Amazing Fish 23-3-13
20:07:30 20:08:37 The life of Fish
20:08:37 20:34:36 Cuttlefish and Jellyfish
20:34:36 20:36:05 BBC Life - Flying Fish
20:36:05 20:37:47 AMAZING PICTURES OF AFRICAN CICHLIDS - HIGH QUALITY
20:37:47 20:43:38 Groupers and Big Fish - Reef Life of the Andaman - Part 10
20:43:38 20:49:44 Schooling Fish - Reef Life of the Andaman - Part 15
20:49:44 20:56:00 Symbiosis & Anemonefish - Reef Life of the Andaman - Part 18
20:56:00 20:59:47 Lionfish, Sea Urchins, Crown of Thorns - Reef Life of the Andaman - Part 17
20:59:47 21:02:33 Filefish & Triggerfishes - Reef Life of the Andaman - Part 12
21:02:33 21:07:28 Fishes Feeding - Reef Life of the Andaman - Part 19
21:07:28 21:12:53 Pufferfishes, Boxfishes & Porcupinefishes - Reef Life of the Andaman - Part 11
21:12:53 21:16:51 Anemone Fishes | Clown Fish | Tropical Marine Life DVD
21:16:51 22:11:21 Diving in Bali
22:11:21 22:13:44 World's Most Amazing Fish 23-3-13
22:13:44 22:14:51 The life of Fish
22:14:51 22:40:50 Cuttlefish and Jellyfish
22:40:50 22:42:19 BBC Life - Flying Fish
22:42:19 22:44:01 AMAZING PICTURES OF AFRICAN CICHLIDS - HIGH QUALITY
22:44:01 22:49:52 Groupers and Big Fish - Reef Life of the Andaman - Part 10
22:49:52 22:55:58 Schooling Fish - Reef Life of the Andaman - Part 15
22:55:58 23:02:14 Symbiosis & Anemonefish - Reef Life of the Andaman - Part 18
23:02:14 23:06:01 Lionfish, Sea Urchins, Crown of Thorns - Reef Life of the Andaman - Part 17
23:06:01 23:08:47 Filefish & Triggerfishes - Reef Life of the Andaman - Part 12
23:08:47 23:13:42 Fishes Feeding - Reef Life of the Andaman - Part 19
23:13:42 23:19:07 Pufferfishes, Boxfishes & Porcupinefishes - Reef Life of the Andaman - Part 11
23:19:07 23:23:05 Anemone Fishes | Clown Fish | Tropical Marine Life DVD
23:23:05 00:17:35 Diving in Bali
00:17:35 00:19:58 World's Most Amazing Fish 23-3-13
00:19:58 00:21:05 The life of Fish
00:21:05 00:47:04 Cuttlefish and Jellyfish
00:47:04 00:48:33 BBC Life - Flying Fish
00:48:33 00:50:15 AMAZING PICTURES OF AFRICAN CICHLIDS - HIGH QUALITY
00:50:15 00:56:06 Groupers and Big Fish - Reef Life of the Andaman - Part 10
00:56:06 01:02:12 Schooling Fish - Reef Life of the Andaman - Part 15
01:02:12 01:08:28 Symbiosis & Anemonefish - Reef Life of the Andaman - Part 18
01:08:28 01:12:15 Lionfish, Sea Urchins, Crown of Thorns - Reef Life of the Andaman - Part 17
01:12:15 01:15:01 Filefish & Triggerfishes - Reef Life of the Andaman - Part 12
01:15:01 01:19:56 Fishes Feeding - Reef Life of the Andaman - Part 19
01:19:56 01:25:21 Pufferfishes, Boxfishes & Porcupinefishes - Reef Life of the Andaman - Part 11
01:25:21 01:29:19 Anemone Fishes | Clown Fish | Tropical Marine Life DVD
01:29:19 02:23:49 Diving in Bali
02:23:49 02:26:12 World's Most Amazing Fish 23-3-13
02:26:12 02:27:19 The life of Fish
02:27:19 02:53:18 Cuttlefish and Jellyfish
02:53:18 02:54:47 BBC Life - Flying Fish
02:54:47 02:56:29 AMAZING PICTURES OF AFRICAN CICHLIDS - HIGH QUALITY
02:56:29 03:02:20 Groupers and Big Fish - Reef Life of the Andaman - Part 10
03:02:20 03:08:26 Schooling Fish - Reef Life of the Andaman - Part 15
03:08:26 03:14:42 Symbiosis & Anemonefish - Reef Life of the Andaman - Part 18
03:14:42 03:18:29 Lionfish, Sea Urchins, Crown of Thorns - Reef Life of the Andaman - Part 17
03:18:29 03:21:15 Filefish & Triggerfishes - Reef Life of the Andaman - Part 12
03:21:15 03:26:10 Fishes Feeding - Reef Life of the Andaman - Part 19
03:26:10 03:31:35 Pufferfishes, Boxfishes & Porcupinefishes - Reef Life of the Andaman - Part 11
03:31:35 03:35:33 Anemone Fishes | Clown Fish | Tropical Marine Life DVD
03:35:33 04:30:03 Diving in Bali
04:30:03 04:32:26 World's Most Amazing Fish 23-3-13
04:32:26 04:33:33 The life of Fish
04:33:33 04:59:32 Cuttlefish and Jellyfish
04:59:32 05:01:01 BBC Life - Flying Fish
05:01:01 05:02:43 AMAZING PICTURES OF AFRICAN CICHLIDS - HIGH QUALITY
05:02:43 05:08:34 Groupers and Big Fish - Reef Life of the Andaman - Part 10
05:08:34 05:14:40 Schooling Fish - Reef Life of the Andaman - Part 15
05:14:40 05:20:56 Symbiosis & Anemonefish - Reef Life of the Andaman - Part 18
05:20:56 05:24:43 Lionfish, Sea Urchins, Crown of Thorns - Reef Life of the Andaman - Part 17
05:24:43 05:27:29 Filefish & Triggerfishes - Reef Life of the Andaman - Part 12
05:27:29 05:32:24 Fishes Feeding - Reef Life of the Andaman - Part 19
05:32:24 05:37:49 Pufferfishes, Boxfishes & Porcupinefishes - Reef Life of the Andaman - Part 11
05:37:49 05:41:47 Anemone Fishes | Clown Fish | Tropical Marine Life DVD
05:41:47 06:36:17 Diving in Bali