A new gobiid fish, Fusigobius duospilus, from the tropical Indo-Pacific
- Hoese, Douglass F, Reader, Sally, J.L.B. Smith Institute of Ichthyology
- Authors: Hoese, Douglass F , Reader, Sally , J.L.B. Smith Institute of Ichthyology
- Date: 1985-01
- Subjects: Gobiidae -- Classification
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/70180 , vital:29631 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 36 , Fusigobius duospilusis described as a new species from several localities in the tropical Pacific and Indian oceans. This species differs from other species of Fusigobius in pectoral ray and gill-raker counts, coloration, reduced pelvic frenum, branching of the pelvic rays, presence of two large black spots on the first dorsal fin and shape of the first dorsal fin. The species is free living on sand. Males average a larger size than females. Sex ratios are uneven, with about twice as many females as males. Fusigobius longispinus Goren is recorded from several localities in the western Indian Ocean, where populations differ morphologically from Red Sea populations. Fusiogobius neophytus africanusls regarded as a synonym of F. neophytus.
- Full Text:
- Date Issued: 1985-01
- Authors: Hoese, Douglass F , Reader, Sally , J.L.B. Smith Institute of Ichthyology
- Date: 1985-01
- Subjects: Gobiidae -- Classification
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/70180 , vital:29631 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 36 , Fusigobius duospilusis described as a new species from several localities in the tropical Pacific and Indian oceans. This species differs from other species of Fusigobius in pectoral ray and gill-raker counts, coloration, reduced pelvic frenum, branching of the pelvic rays, presence of two large black spots on the first dorsal fin and shape of the first dorsal fin. The species is free living on sand. Males average a larger size than females. Sex ratios are uneven, with about twice as many females as males. Fusigobius longispinus Goren is recorded from several localities in the western Indian Ocean, where populations differ morphologically from Red Sea populations. Fusiogobius neophytus africanusls regarded as a synonym of F. neophytus.
- Full Text:
- Date Issued: 1985-01
Halicampus zavorensis and H. marquesensis, new species of pipefishes (Syngnathidae) from Mozambique and the Marquesas Islands
- Dawson, C E (Charles E.), 1922-, J.L.B. Smith Institute of Ichthyology
- Authors: Dawson, C E (Charles E.), 1922- , J.L.B. Smith Institute of Ichthyology
- Date: 1984-02
- Subjects: Pipefishes -- Mozambique -- Classification , Pipefishes -- French Polynesia -- Marquesas Islands -- Classification
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/70061 , vital:29611 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 34 , Two new species of syngnathine (tail-pouch) pipefishes sharing a continuous median dorsal snout ridge, a short snout (its length more than 2 in HL), presence of lateral spines or ridges on the snout, dermal flaps on the eye, 14 trunk rings and ca. 21-23 dorsal-fin rays are described and illustrated. Halicampus zavorensis is distinguished by a linear and distally spinulose dorsal snout ridge, two lateral spines on the snout and 36-37 tail rings. In H. marquesensis, the arcuate and partly denticulate dorsal snout ridge is paralleled distally by a bilateral pair of ridges which originate on the interorbital, there is a vestigial lateral ridge on the snout, and there are 39-40 tail rings. These pipefishes are compared to other species presently referred to the genus Halicampus Kaup.
- Full Text:
- Date Issued: 1984-02
- Authors: Dawson, C E (Charles E.), 1922- , J.L.B. Smith Institute of Ichthyology
- Date: 1984-02
- Subjects: Pipefishes -- Mozambique -- Classification , Pipefishes -- French Polynesia -- Marquesas Islands -- Classification
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/70061 , vital:29611 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 34 , Two new species of syngnathine (tail-pouch) pipefishes sharing a continuous median dorsal snout ridge, a short snout (its length more than 2 in HL), presence of lateral spines or ridges on the snout, dermal flaps on the eye, 14 trunk rings and ca. 21-23 dorsal-fin rays are described and illustrated. Halicampus zavorensis is distinguished by a linear and distally spinulose dorsal snout ridge, two lateral spines on the snout and 36-37 tail rings. In H. marquesensis, the arcuate and partly denticulate dorsal snout ridge is paralleled distally by a bilateral pair of ridges which originate on the interorbital, there is a vestigial lateral ridge on the snout, and there are 39-40 tail rings. These pipefishes are compared to other species presently referred to the genus Halicampus Kaup.
- Full Text:
- Date Issued: 1984-02
Problems of species definition in Lake Malawi cichlid fishes (Pisces: Cichlidae)
- Lewis, Digby S C, J.L.B. Smith Institute of Ichthyology
- Authors: Lewis, Digby S C , J.L.B. Smith Institute of Ichthyology
- Date: 1982-09
- Subjects: Cichlids -- Nyasa, Lake , Fishes
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/69918 , vital:29595 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 23 , The evolution of the cichlid species flock in Lake Malawi has taken place very rapidly and resulted in the proliferation of a large number of species many of which are similar to one another. This has given rise to a situation in which traditional methods of distinguishing species based on preserved specimens are often of limited value. There are many instances of different species having almost identical morphologies, of single populations of one species showing considerable morphological variation and of marked geographical intraspecific variation. Polymorphism is considered not to be as widespread as previously thought, and pronounced random intraspecific colour variation within a population is discounted. Sympatric sibling species may be distinguished by observing behavioural and habitat differences in the field, but no means has been devised for ascertaining whether morphologically and behaviourally similar allopatric forms are specifically distinct. Lack of access to fresh specimens and lack of information on distribution and habitat have resulted in numerous errors appearing in taxonomic works on Lake Malawi cichlids. Great care is needed when attempting scientific descriptions of cichlid species from the African Great Lakes, and it is suggested that such work be left to specialists with knowledge of living and fresh fish in these lakes.
- Full Text:
- Date Issued: 1982-09
- Authors: Lewis, Digby S C , J.L.B. Smith Institute of Ichthyology
- Date: 1982-09
- Subjects: Cichlids -- Nyasa, Lake , Fishes
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/69918 , vital:29595 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 23 , The evolution of the cichlid species flock in Lake Malawi has taken place very rapidly and resulted in the proliferation of a large number of species many of which are similar to one another. This has given rise to a situation in which traditional methods of distinguishing species based on preserved specimens are often of limited value. There are many instances of different species having almost identical morphologies, of single populations of one species showing considerable morphological variation and of marked geographical intraspecific variation. Polymorphism is considered not to be as widespread as previously thought, and pronounced random intraspecific colour variation within a population is discounted. Sympatric sibling species may be distinguished by observing behavioural and habitat differences in the field, but no means has been devised for ascertaining whether morphologically and behaviourally similar allopatric forms are specifically distinct. Lack of access to fresh specimens and lack of information on distribution and habitat have resulted in numerous errors appearing in taxonomic works on Lake Malawi cichlids. Great care is needed when attempting scientific descriptions of cichlid species from the African Great Lakes, and it is suggested that such work be left to specialists with knowledge of living and fresh fish in these lakes.
- Full Text:
- Date Issued: 1982-09
A late Cretaceous (Maastrichtian) galaxiid fish from South Africa
- Anderson, M Eric, J.L.B. Smith Institute of Ichthyology
- Authors: Anderson, M Eric , J.L.B. Smith Institute of Ichthyology
- Date: 1998-05
- Subjects: Fishes -- Indian Ocean , Flatfishes -- Indian Ocean
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/71000 , vital:29769 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 60 , A new teleost fish, Stompooria rogersmithi, is described from deposits of a Late Cretaceous crater lake in the Karoo, South Africa. The fossils represent the earliest known species of the recently redefined family Galaxiidae. Distinguishing features include the apposition of the dorsal and anal fins, 41- 42 vertebrae, all neural arches anterior to the dorsal fin origin fused to the centra, presence of epineurals, the opercle reduced above the level of the hyomandibular articulation, the posttemporal and supracleithrum without a connection to the seismosensory head canals, 18 principal caudal fin rays, two epurals, five hypurals, no dorsal outgrowth on the uroneural, the neural spines of the second and third preural centra similar in size, and absence of a stegural, a third uroneural, a mesocoracoid, a supramaxilla, and teeth on the maxilla and palatine bones.
- Full Text:
- Date Issued: 1998-05
- Authors: Anderson, M Eric , J.L.B. Smith Institute of Ichthyology
- Date: 1998-05
- Subjects: Fishes -- Indian Ocean , Flatfishes -- Indian Ocean
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/71000 , vital:29769 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 60 , A new teleost fish, Stompooria rogersmithi, is described from deposits of a Late Cretaceous crater lake in the Karoo, South Africa. The fossils represent the earliest known species of the recently redefined family Galaxiidae. Distinguishing features include the apposition of the dorsal and anal fins, 41- 42 vertebrae, all neural arches anterior to the dorsal fin origin fused to the centra, presence of epineurals, the opercle reduced above the level of the hyomandibular articulation, the posttemporal and supracleithrum without a connection to the seismosensory head canals, 18 principal caudal fin rays, two epurals, five hypurals, no dorsal outgrowth on the uroneural, the neural spines of the second and third preural centra similar in size, and absence of a stegural, a third uroneural, a mesocoracoid, a supramaxilla, and teeth on the maxilla and palatine bones.
- Full Text:
- Date Issued: 1998-05
Two new species of clinid fishes (Perciformes: Clinidae) from South Africa
- Heemstra, Phillip C, Wright, J E, J.L.B. Smith Institute of Ichthyology
- Authors: Heemstra, Phillip C , Wright, J E , J.L.B. Smith Institute of Ichthyology
- Date: 1986-07
- Subjects: Clinidae -- Classification , Perciformes -- South Africa
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/70224 , vital:29635 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 40 , Two new species of clinid fishes, Cancelloxus elongatus and Pavoclinus smalei, are described from specimens collected in 10 — 25 m off the southeastern Cape Province using rotenone and SCUBA. Generic assignment of both species is provisional pending a reassessment of the generic classification of South African clinid fishes.
- Full Text:
- Date Issued: 1986-07
- Authors: Heemstra, Phillip C , Wright, J E , J.L.B. Smith Institute of Ichthyology
- Date: 1986-07
- Subjects: Clinidae -- Classification , Perciformes -- South Africa
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/70224 , vital:29635 , Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB)) Periodicals Margaret Smith Library (South African Institute for Aquatic Biodiversity (SAIAB))
- Description: Online version of original print edition of the Special Publication of the J.L.B. Smith Institute of Ichthyology; No. 40 , Two new species of clinid fishes, Cancelloxus elongatus and Pavoclinus smalei, are described from specimens collected in 10 — 25 m off the southeastern Cape Province using rotenone and SCUBA. Generic assignment of both species is provisional pending a reassessment of the generic classification of South African clinid fishes.
- Full Text:
- Date Issued: 1986-07