Hollardia | |
---|---|
Hollardia goslinei | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Tetraodontiformes |
Suborder: | Triacanthoidei |
Family: | Triacanthodidae |
Subfamily: | Hollardiinae |
Genus: | Hollardia Poey, 1861 |
Type species | |
Hollardia hollardi Poey, 1861 |
Hollardia is a genus of marine ray-finned fishes belonging to the family Triacanthodidae, the spikefishes. These demersal fishes are found in the Western Atlantic Ocean with one species being found in the Pacific Ocean.
Hollardia was first proposed as a monospecific genus in 1861 by the Cuban zoologist Felipe Poey when he described Hollardia hollardi as its only species, making that species its type species by monotypy. [1] H. hollardi was given a type locality of Havana. [2] In 1968 the American ichthyologist James C. Tyler classified this genus, alongside Parahollardia in a new subfamily of the family Triacanthodidae, the Hollardiinae. [3] The 5th edition of Fishes of the World classifies the family Triacanthodidae in the suborder Triacanthoidei in the order Tetraodontiformes. [4]
Hollardia is named in honour of the French physician and naturalist Henri Hollard, a pioneering worker in the study of the Plectognathi. The three species in the genus all have eponyms as there specific names, the type species species epiphet further honours Hollard. H. meadi has a specific name which honours the American ichthyologist Giles W. Mead while that of H. goslinei honours another American ichthyologist, William A. Gosline, who collected its holotype when he collected fishes killed by the eruption of Mauna Loa in 1950. [5]
Hollardia contaisn the following three valid species: [6]
Hollardia spikefishes have a deep, slightly compressed body with a small mouth which opens at the front. The teeth are conical in shape and there is a single series on each jaw. The gill opening is a short vertical slit in front of the base of the pectoral fin. The dorsal fin typically has its origin origin immediately to the rear of the gill opening's top corner. It is supported by six spines, the first being long and robust, and these descerase in size towards the rear and the spines can be locked upright the soft rays are branched. There is a single large locakable spine in the pelvic fin too. The lower surface of the scale-covered part of the pelvis is rounded. Thes efishes have thick, rough skin whivh is covered in many small scales, each one with tiny spines on it. [7] These are small fishes with maximum published lengths of 14.4 cm (5.7 in) standard length for H. goslinei, 11.5 cm (4.5 in) standard length for H. hollardi and 10 cm (3.9 in) total length for H. meadi. [8]
Hollardia spikefishes are found in teh Western Atlantic Ocean, 2 species, [7] from Massachusetts and Bermuda to Bahia in Brazil. [9] The third species, H. goslinei is found in the central west Pacific and has been recorded from Hawaii, the Hawaiian ridge, Johnston Atoll, the Line Islands, the Mariana Islands and from the Coral Sea off Queensland. [10] These are benthic fishes found at depths between 230 and 230 m (750 and 750 ft). [11] In the Western Atlantic Ocean, H. harrodi is found on soft substrates, [12] while H. meadi is found on rocky substrates. [13]
Hollardia was rfecorded from new research in the Coral Sea in 2020 by Australian scientists using a robotic submarine sent back pictures of what appears to be Hollardia hollardi, for the first time in an area not around Hawaii. [14]
Tetraodontiformes, also known as the Plectognathi, is an order of ray-finned fishes which includes the pufferfishes and related taxa. This order has been classified as a suborder of the order Perciformes, although recent studies have found that it, as the Tetraodontoidei, is a sister taxon to the anglerfish order Lophiiformes, called Lophiodei, and have placed both taxa within the Acanthuriformes. The Tetraodontiformes are represented by 10 extant families and at around 430 species overall. The majority of the species within this order are marine but a few may be found in freshwater. They are found throughout the world.
Triodon macropterus is a tetraodontiform fish, the only living species in the genus Triodon and family Triodontidae. Other members of the family are known from fossils stretching back to the Eocene. The threetooth puffer was first scientifically described by René Lesson in 1831 and is recognizable for its large belly flap which has the ability to blend into the body when fully retracted.
Triacanthidae, commonly known as triplespines or tripodfishes, is a family of Indo-Pacific fishes. It is classified in the order Tetraodontiformes, along with the pufferfishes and the ocean sunfish. The family consists of seven species in four genera, in addition to three extinct genera that are only known from fossils.
The striped croaker, also known as the St Lucian corvina, is a species of marine ray-finned fish belonging to the family Sciaenidae, the drums and croakers. This species is found in the western Atlantic Ocean in the Caribbean Sea and Gulf of Mexico.
The spikefishes are ray-finned fishes related to the pufferfishes and triggerfishes. They live in deep waters; more than 50 m (160 ft), but above the continental shelves. They are found in the Atlantic, Indian Ocean, and the west-central Pacific.
Cantherhines dumerilii is a species of fish in the family Monacanthidae, the filefishes. Its common names include whitespotted filefish, barred filefish, orange-fin file, and yelloweye leatherjacket. It is distributed in the Indian and Pacific Oceans where it is found on coral reefs.
Atrophacanthus is a monospecific genus of marine ray-finned fish belonging to the family Triacanthodidae, the spikefishes. The only species in the genus is Atrophacanthus japonicus, the upward-mouth spikefish, which is found in the Indo-West Pacific region.
Bathyphylax is a genus of marine ray-finned fishes belonging to the family Triacanthodidae, the spikefishes. The fishes in this genus are found in the deep waters of the Indian and Pacific Oceans.
Macrorhamphosodes is a genus of marine ray-finned fishes belonging to the family Triacanthodidae, the spikefishes. The fishes in this genus are found in the deep waters of the Indian and Pacific Oceans.
Parahollardia is a genus of marine ray-finned fishes belonging to the family Triacanthodidae, the spikefishes. These demersal fishes are found in the Western Atlantic Ocean.
Triacanthodes is a genus of spikefishes found in the Indian and western Pacific Oceans.
Amblycirrhitus is a genus of ray-finned fishes, hawkfishes belonging to the family Cirrhitidae. These fishes are found on tropical reefs worldwide.
Corvula is a genus of marine ray-finned fishes belonging to the family Sciaenidae, the drums and croakers. These fishes are found in the western Atlantic Ocean and the central eastern Pacific Ocean.
Cretatriacanthidae is an extinct family of prehistoric marine ray-finned fish from the Late Cretaceous. It contains two genera, both known from southern Europe.
Pempheris poeyi, the curved sweeper and shortfin sweeper, is a species of marine ray-finned fish, a sweeper in the family Pempheridae from the western Atlantic Ocean.
Paratriacanthodes retrospinis is a marine bathydemersal fish species in the spikefish family.
Triacanthodes anomalus, also called the red spikefish, is a species of the family Triacanthodidae (spikefish) of the order Tetraodontiformes.
Triacanthoidei is a suborder of ray-finned fishes belonging to the order Tetraodontiformes, which includes the pufferfishes, triggerfishes and related taxa. These benthic fishes are mainly found in the Indian Ocean with some of the spikefishes found in the Western Atlantic Ocean.
Hollardiinae is a subfamily of marine ray-finned fishes belonging to the family Triacanthodidae, the spikefishes. This small subfamily comprises two genera and a total of five species and all, except one species, are found in the tropical and subtropical waters of the Western Atlantic Ocean. The exception is found in the western and central Pacific Ocean.
Triacanthodinae is a subfamily of marine ray-finned fishes belonging to the family Triacanthodidae, the spikefishes. This subfamily comprises nine genera and a total of nineteen species and all, except one species, are found in the tropical and subtropical waters of the Indo-Pacific. The exception is found in the western Atlantic Ocean.