New Lake Turkana Chrysichthys described
Picture kindly supplied by Michael Hardman.
A new Chrysichthys catfish endemic to Lake Turkana in Kenya has been described by ichthyologist Michael Hardman in the latest issue of the Proceedings of the Academy of Natural Sciences of Philadelphia.
The new species is named Chrysichthys turkana after the lake, and can be distinguished from congeners by the number of gill rakers on the first gill arch, the shapes of the tooth plates, mouth and postcleithral process, as well as measurements about the eye.
According to the author, "Chrysichthys turkana is demersal during the day, being locally abundant between 10 and 25 m depth zones, but migrates closer to shore at dusk to feed on chironomid larvae and ostracods.
"A mean daily temperature of almost 30°C (19.539.9°C) coupled with strong prevailing winds from the southeast evaporate approximately 2300 mm yr-1 and help to maintain alkaline (pH=9.2) and moderately saline (2.5) conditions throughout the lake."
*********more********
New African suckermouth placed in new genus
Picture kindly supplied by Thomas Vigliotta.
American scientists have described a new genus and species of suckermouth mochokid catfish from rivers in Gabon.
The new catfish, named Atopodontus adriaensi, is described in the most recent issue of the Proceedings of the Academy of Natural Sciences of Philadelphia by John Friel and Thomas Vigliotta of Cornell University.
Atopodontus adriaensi is distinguished from other suckermouth mochokid catfishes by characters in the internal and external anatomy, including robust mandibular teeth arranged in transverse rows that are approximately 66% of the width of the paired premaxillary tooth patches, and the presence of an anteriorly directed cavity located dorsal to the lower lip and ventral to the oral cavity.
The genus is named after its unusual dentition (from the Greek atopos, meaning strange and odontos, meaning tooth), while the species is named after Dominique Adriaens, a Belgian ichthyologist who first brought the existence of the fish to the authors' attention.
Atopodontus adriaensi is known from the Ivindo, Okano, Ngounié, and Nyanga Rivers of Gabon.
*******more******
New Syndontis described from west central Africa
Picture kindly supplied by Thomas Vigliotta.
A new species of mochokid catfish has been described from Gabon and Equatorial Guinea in the latest issue of the Proceedings of the Academy of Natural Scineces of Philadelphia.
Jhon Friel and John Sullivan have named the new species Synodontis woleuensis, distinguishing it from other synodontis by a combination of serrations on the anterior edge of the dorsal spine and a colour pattern consisting of a dark background with numerous, small and irregular light spots, a pair of light spots anterior and posterior to the adipose fin, and a narrow, depigmented, curved band along the anterior margin of the caudal fin.
The new species, previously confused with S. batesii, is only known from the Woleu River of Gabon and the Kyé (Kie) River, a tributary of the Ntem River that runs along the border between Equatorial Guinea and Gabon.
******more*** 3 new cats from the doras family
Three new Doras catfish described
Doras higuchii. Pictures kindly supplied by Mark Sabaj Pérez.
Three new species of the South American thorny catfish genus Doras are described in a taxonomic revision of the genus (that recognizes five living and one fossil species as valid).
Publishing their research in the latest issue of the Proceedings of the Academy of Natural Sciences of Philadelphia, Mark Sabaj Pérez and José Birindelli name D. phlyzakion, D. higuchii and D. zuanoni from the middle Amazon and tributaries, lower Amazon tributaries and Araguaia River (Tocantins drainage), respectively.
The three species are distinguished from each other and the three other recognised congeners (D. carinatus, D. micropoeus and the fossil D. dioneae) by a combination of the number of midlateral scutes, shapes of the swimbladder, the bones on the head and on the pectoral girdle and colour pattern.
Doras higuchii is named after Brazilian ichthyologist Horácio Higuchi in recognition of his work on thorny catfish sytematics. According to the authors, Three adults taken at the type locality in the rio Curuá were collected at night using cast nets and bag seine over sand in swift clear water (depth <2 m) of a medium-size channel immediately below a large cataract.
Doras zuanoni by Mark Sabaj Pérez.
Doras phlyzakion is named after the abundant pores on the ventral surface of the body (from the Greek word meaning blister). This species appears to prefer still-water habitats, as it is often recorded from large permanent lakes on the floodplains of major rivers.
Doras zuanoni is named after Brazilian ichthyologist Jansen Zuanon for his contribution to Neotropical ichthyology and discovery of the new species. Its habitat preference is said to be similar to D. phlyzakion.
The five living species of Doras are divided into two groups: the D. phlyzakion group (consisting of D. phlyzakion and D. zuanoni) and the D. carinatus (consisting of D. carinatus, D. higuchii and D. micropoeus).
*****more
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New Psilorhynchus described from Myanmar
Psilorhynchus breviminor by Heok Hee Ng.
A new species of cypriniform fish has been described from the Irrawaddy River drainage in Myanmar.
Named Psilorhynchus breviminor by Kevin Conway and Richard Mayden in the latest issue of Ichthyological Exploration of Freshwaters, the new species is distinguished from congeners by a combination of fin-ray and scale counts, proportional measurements and differences in the sensory canals in the head.
The species is named for its short, stout appearance (Latin brevis, meaning short and minor, meaning small) and was collected from a cool, fast flowing stream that was about 30 cm deep.
The stream has a substrate of sand and gravel, and the pH of the water was 8.4.
=) ****last 1*****
New Chrysichthys described from Lake Mai-Ndombe
Picture kindly supplied by Michael Hardman.
A new species of claroteid catfish endemic to Lake Mai-Ndombe (formerly Lake Albert) in the Democratic Republic of the Congo has been described.
The new species, named Chrysichthys praecox by ichthyologists Michael Hardman and Melanie Stiassny in the latest issue of Ichthyological Exploration of Freshwaters, is a small, sexually dimorphic species distinguished from congeners by differences in the morphologies of the palatal toothplates, supraocipital process, jaws and postcleithral process, barbel length, colour and number of gill rakers on the first gill arch.
Adult males of this species have expanded cheek muscles, mouths, toothplates and rectal skin folds compared to females.
This species is named after the small size at which it matures (from the Latin praecox, meaning early ripening or precocious).
*************thats alot of new found cats**********
~josh~
Picture kindly supplied by Michael Hardman.
A new Chrysichthys catfish endemic to Lake Turkana in Kenya has been described by ichthyologist Michael Hardman in the latest issue of the Proceedings of the Academy of Natural Sciences of Philadelphia.
The new species is named Chrysichthys turkana after the lake, and can be distinguished from congeners by the number of gill rakers on the first gill arch, the shapes of the tooth plates, mouth and postcleithral process, as well as measurements about the eye.
According to the author, "Chrysichthys turkana is demersal during the day, being locally abundant between 10 and 25 m depth zones, but migrates closer to shore at dusk to feed on chironomid larvae and ostracods.
"A mean daily temperature of almost 30°C (19.539.9°C) coupled with strong prevailing winds from the southeast evaporate approximately 2300 mm yr-1 and help to maintain alkaline (pH=9.2) and moderately saline (2.5) conditions throughout the lake."
*********more********
New African suckermouth placed in new genus
Picture kindly supplied by Thomas Vigliotta.
American scientists have described a new genus and species of suckermouth mochokid catfish from rivers in Gabon.
The new catfish, named Atopodontus adriaensi, is described in the most recent issue of the Proceedings of the Academy of Natural Sciences of Philadelphia by John Friel and Thomas Vigliotta of Cornell University.
Atopodontus adriaensi is distinguished from other suckermouth mochokid catfishes by characters in the internal and external anatomy, including robust mandibular teeth arranged in transverse rows that are approximately 66% of the width of the paired premaxillary tooth patches, and the presence of an anteriorly directed cavity located dorsal to the lower lip and ventral to the oral cavity.
The genus is named after its unusual dentition (from the Greek atopos, meaning strange and odontos, meaning tooth), while the species is named after Dominique Adriaens, a Belgian ichthyologist who first brought the existence of the fish to the authors' attention.
Atopodontus adriaensi is known from the Ivindo, Okano, Ngounié, and Nyanga Rivers of Gabon.
*******more******
New Syndontis described from west central Africa
Picture kindly supplied by Thomas Vigliotta.
A new species of mochokid catfish has been described from Gabon and Equatorial Guinea in the latest issue of the Proceedings of the Academy of Natural Scineces of Philadelphia.
Jhon Friel and John Sullivan have named the new species Synodontis woleuensis, distinguishing it from other synodontis by a combination of serrations on the anterior edge of the dorsal spine and a colour pattern consisting of a dark background with numerous, small and irregular light spots, a pair of light spots anterior and posterior to the adipose fin, and a narrow, depigmented, curved band along the anterior margin of the caudal fin.
The new species, previously confused with S. batesii, is only known from the Woleu River of Gabon and the Kyé (Kie) River, a tributary of the Ntem River that runs along the border between Equatorial Guinea and Gabon.
******more*** 3 new cats from the doras family
Three new Doras catfish described
Doras higuchii. Pictures kindly supplied by Mark Sabaj Pérez.
Three new species of the South American thorny catfish genus Doras are described in a taxonomic revision of the genus (that recognizes five living and one fossil species as valid).
Publishing their research in the latest issue of the Proceedings of the Academy of Natural Sciences of Philadelphia, Mark Sabaj Pérez and José Birindelli name D. phlyzakion, D. higuchii and D. zuanoni from the middle Amazon and tributaries, lower Amazon tributaries and Araguaia River (Tocantins drainage), respectively.
The three species are distinguished from each other and the three other recognised congeners (D. carinatus, D. micropoeus and the fossil D. dioneae) by a combination of the number of midlateral scutes, shapes of the swimbladder, the bones on the head and on the pectoral girdle and colour pattern.
Doras higuchii is named after Brazilian ichthyologist Horácio Higuchi in recognition of his work on thorny catfish sytematics. According to the authors, Three adults taken at the type locality in the rio Curuá were collected at night using cast nets and bag seine over sand in swift clear water (depth <2 m) of a medium-size channel immediately below a large cataract.
Doras zuanoni by Mark Sabaj Pérez.
Doras phlyzakion is named after the abundant pores on the ventral surface of the body (from the Greek word meaning blister). This species appears to prefer still-water habitats, as it is often recorded from large permanent lakes on the floodplains of major rivers.
Doras zuanoni is named after Brazilian ichthyologist Jansen Zuanon for his contribution to Neotropical ichthyology and discovery of the new species. Its habitat preference is said to be similar to D. phlyzakion.
The five living species of Doras are divided into two groups: the D. phlyzakion group (consisting of D. phlyzakion and D. zuanoni) and the D. carinatus (consisting of D. carinatus, D. higuchii and D. micropoeus).
*****more
****New Psilorhynchus described from Myanmar
Psilorhynchus breviminor by Heok Hee Ng.
A new species of cypriniform fish has been described from the Irrawaddy River drainage in Myanmar.
Named Psilorhynchus breviminor by Kevin Conway and Richard Mayden in the latest issue of Ichthyological Exploration of Freshwaters, the new species is distinguished from congeners by a combination of fin-ray and scale counts, proportional measurements and differences in the sensory canals in the head.
The species is named for its short, stout appearance (Latin brevis, meaning short and minor, meaning small) and was collected from a cool, fast flowing stream that was about 30 cm deep.
The stream has a substrate of sand and gravel, and the pH of the water was 8.4.
=) ****last 1
*****New Chrysichthys described from Lake Mai-Ndombe
Picture kindly supplied by Michael Hardman.
A new species of claroteid catfish endemic to Lake Mai-Ndombe (formerly Lake Albert) in the Democratic Republic of the Congo has been described.
The new species, named Chrysichthys praecox by ichthyologists Michael Hardman and Melanie Stiassny in the latest issue of Ichthyological Exploration of Freshwaters, is a small, sexually dimorphic species distinguished from congeners by differences in the morphologies of the palatal toothplates, supraocipital process, jaws and postcleithral process, barbel length, colour and number of gill rakers on the first gill arch.
Adult males of this species have expanded cheek muscles, mouths, toothplates and rectal skin folds compared to females.
This species is named after the small size at which it matures (from the Latin praecox, meaning early ripening or precocious).
*************thats alot of new found cats
**********~josh~
