fish Archives | Earth Life

Catadromous Fish

Gordon Ramel — Sat, 30 Mar 2024 10:45:46 +0000

Catadromous fish are a unique group of species that migrate between freshwater and saltwater habitats to complete their life cycles. The term “catadromous” comes from Greek, meaning “running downward,” referring to these fish species that live in freshwater but go down to the sea to spawn. Catadromous fish exhibit fascinating adaptations that allow them to …

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What Fish Eat Krill

Gordon Ramel — Mon, 08 Jan 2024 05:27:46 +0000

What Fish Eat Krill? What Do Krill Eat? Krill is a small crustacean that looks like a shrimp. It’s an important part of the marine food web. The krill are abundant in all oceans around the world. Estimates suggest that the Southern Ocean contains over 500 million tonnes of red shrimp or krill. What exactly are …

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What Eats Fish?

Gordon Ramel — Sun, 26 Nov 2023 04:30:36 +0000

What Eats Fish? What Do Fish Eat? A wide variety of fish species can be found in the underwater world. Fish live in all kinds of water bodies around the world. From small ponds to rivers and oceans, fish can be found everywhere. They are vital to aquatic ecosystems and food webs. What eats fish, though? What eats fish? These …

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What Is A Elasmobranch?

Duke — Wed, 18 Oct 2023 21:33:29 +0000

What Is A Elasmobranch And What Subclass Are They? Elasmobranchs are an iconic and diverse subclass of cartilaginous fishes, ranging from fearsome sharks to flattened rays and skates. The name “elasmobranch” comes from the Greek words elasm—meaning plate—and branchia, meaning gills. For centuries, their anatomy and biology have fascinated and frightened humans in equal measure. …

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Is Fish Farming Bad?

Duke — Wed, 13 Sep 2023 03:31:00 +0000

Is Fish Farming Bad & Should It Be Reevaluated? Fish farming is already an activity with a mixed image, while many people love it because it is economically successful, others dislike the dislocation of natural systems that this allows. Especially disliked are ocean pens where the fish are kept in large cages of nets in …

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Can a Fish Drown? Do They Need Oxygen?

Gordon Ramel — Sat, 02 Jul 2022 14:58:32 +0000

There’s no denying that fish breathe differently compared to other animals, especially ground-dwelling creatures. But can a fish drown? Fish can suffocate underwater, but they cannot drown. Lack of oxygen, water contamination, as well as their gills being unable to do their job, are the causes of a fish dying in water rather than drowning …

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Family Achiropsettidae

Gordon Ramel — Mon, 30 Mar 2020 03:28:56 +0000

Family Achiropsettidae – Southern flounders Order: Pleuronectiformes Class: Actinopterygii (ray-finned fishes) No. of Genera: 3 No. of Species: 4 Environment: Fresh: No Brackish: No Marine: Yes Aquarium: none First Fossil Record: Ref: Remark: Antarctic and sub-Antarctic waters. Body greatly compressed; both eyes on left side of head. Dorsal and anal fins separate from caudal fin; …

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Family Acestrorhynchidae

Gordon Ramel — Mon, 30 Mar 2020 03:28:28 +0000

Family Acestrorhynchidae Fishes of this family are characterized by very elongate (pike-like) bodies covered with relatively small scales. All teeth are conical and strong canines are present on the premaxilla, anterior part of the maxilla and the dentary. Small conical teeth are present on the ectopterygoid and minute conical teeth have been detected on the …

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Family Abyssocottidae

Gordon Ramel — Mon, 30 Mar 2020 03:28:04 +0000

The Abyssocottidae is a small family of 20 species, in six genera. They are commonly called Abyssocottids or Deep-sea Sculpins, which is confusing because they don’t actually live in a sea or deep water. However, the name Deep-water Sculpins is also used for some species from other related families, so be careful. They are mostly …

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Family Achiridae

Gordon Ramel — Mon, 30 Mar 2020 03:27:33 +0000

First Fossil Record: lower Tertiary, lower Eocene Ref: Berg, L.S..1958 The Achiridae are saltwater and freshwater flatfishes with eyes on the right side, body rounded or ovate in lateral view in most species, including fins, and elongate in Achiropsis nattereri, Apionichthys dumerili, and one undescribed species referred to Apionichthys. The eyed-side lower lip has a …

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