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83 results for “Alestidae”
FIGURE 1 in A new Alestopetersius (Characiformes: Alestidae) from the Kwilu River (Kasai basin) of central Africa; with a phylogeny for the genus and synonymy of Duboisialestes
FIGURE 1. Location of the Kwilu River, stars indicate collecting localities for Alestopetersius conspectus, new species. Inset photograph: locality of the holotype at Carrefour.
FIGURE 4 in A new Alestopetersius (Characiformes: Alestidae) from the Kwilu River (Kasai basin) of central Africa; with a phylogeny for the genus and synonymy of Duboisialestes
FIGURE 4. Alestopetersius conspectus, new species (A) AMNH 253473, 3, preserved holotype, 52.9 mm SL, (B) 3 paratype, immediately post mortem, (C) AMNH 253477, Ƥ, preserved paratype, 47.5 mm SL, (D) Ƥ paratype, immediately post mortem.
FIGURE 7 in Description of two new Bathyaethiops species (Teleostei: Alestidae) from the Congo basin
FIGURE 7. Bathyaethiops flammeus sp. nov., live female directly after capture (05. August 2009) at Yambula-Bakéré, Democratic Republic of Congo.
FIGURE 3 in Description of two new Bathyaethiops species (Teleostei: Alestidae) from the Congo basin
FIGURE 3. Dentition of Bathyaethiops baka sp. nov., non-type material, DMM IE/9792, 21.1 mm SL. A—single teeth in distal view. B—jaws in occlusal view.
FIGURE 10 in Description of two new Bathyaethiops species (Teleostei: Alestidae) from the Congo basin
FIGURE 10. Pigmentation pattern (only melanophores) of species presently recognized in the genus Bathyaethiops. A—B. flammeus (type locality); B—B. flammeus (Boende); C—B. caudomaculatus (strong pigmentation); D—B. greeni;E—B. caudomaculatus (weak pigmentation); F—B. breusenghemi; G—B. baka; H—B. atercrinis.
FIGURE 2 in Description of two new Bathyaethiops species (Teleostei: Alestidae) from the Congo basin
FIGURE 2. Bathyaethiops baka sp. nov., live male directly after capture (08. February 2008) at Ngoko River below Nki falls; Cameroon.
FIGURE 9 in Description of two new Bathyaethiops species (Teleostei: Alestidae) from the Congo basin
FIGURE 9. Dentition of Bathyaethiops flammeus sp. nov., paratype, DMM IE/9791, 34.1 mm SL. A—single teeth in distal view. B—jaws in occlusal view.
FIGURE 8. Bathyaethiops flammeus MRAC 177882-889, specimen number 3 in Description of two new Bathyaethiops species (Teleostei: Alestidae) from the Congo basin
FIGURE 8. Bathyaethiops flammeus MRAC 177882-889, specimen number 3; 36.9 mm SL, from Boende, Democratic Republic of Congo.
FIGURE 1 in Description of two new Bathyaethiops species (Teleostei: Alestidae) from the Congo basin
FIGURE 1. Bathyaethiops baka sp. nov., holotype, ZSM 43939; 24.1 mm SL; Ngoko River below Nki falls; Cameroon.
FIGURE 4 in Description of two new Bathyaethiops species (Teleostei: Alestidae) from the Congo basin
FIGURE 4. Records of Bathyaethiops species; filled symbols—localities where specimens where checked by Mamoneke & Stiassny (2012) or in the present study; symbol outlines—other records from MRAC database; T—type localities; star—B. atercrinis, cross—B. baka, circle—B. caudomaculatus, inverse triangle—B. flammeus, triangle—B. greeni,, square—B. breuseghemi.
FIGURE 3 in Micralestes (Characiformes, Alestidae) of the lower Congo River, with a description of a new species endemic to the lower Congo River rapids in the Democratic Republic of Congo
FIGURE 3. Micralestes schelly sp. nov. A) buccal jaws in lateral view, B) dentary in medial view.
FIGURE 5 in Description of two new Bathyaethiops species (Teleostei: Alestidae) from the Congo basin
FIGURE 5. Ngoko River between Nki falls and Ndongo (approx. N 02°04'23'', E 14°49'52''); Cameroon.
FIGURE 6 in Description of two new Bathyaethiops species (Teleostei: Alestidae) from the Congo basin
FIGURE 6. Bathyaethiops flammeus sp. nov., holotype, ZSM 43945; 39.1 mm SL.
Fig. 2 in Sperm evolution in the family Alestidae with comparative data for the genus Chalceus (Ostariophysi: Characiformes)
Fig. 2. Spermatozoon of Bryconalestes longipinnis. a, b, c: longitudinal sections. d, e, f, g, h: transverse sections from top to posterior region. The nucleus (n) is spherical and lies medial to the flagellum (f). The centriolar complex (p, d) and nuclear fossa (arrow) is medial. The proximal centriole (p) is in a right angle relative to the distal centriole (d). The cytoplasmic canal is present (asterisk). The midpiece (pi) is asymmetrical, and contains the spherical mitochondria (m), vesicles (v) and a cytoplasmic sleeve (arrowhead). The flagellum has lateral fins (fi). Legends: cr: concentric membranous rings, d: distal centriole, f: flagellum, fi: lateral fins, m: mitochondria, n: nucleus, p: proximal centriole, v: vesicle, asterisk: cytoplasmic canal, arrow: nuclear fossa, arrowhead: cytoplasmic sleeve.
Fig. 3 in Sperm evolution in the family Alestidae with comparative data for the genus Chalceus (Ostariophysi: Characiformes)
Fig. 3. Spermatozoon of Alestopetersius compressus. a, b, c: longitudinal sections. d, e, f: transverse sections from top to posterior region. The nucleus (n) is spherical and lies eccentric to the flagellum (f). The centriolar complex (p, d) and nuclear fossa (arrow) is eccentric. The proximal centriole (p) is oblique relative to the distal centriole (d). The cytoplasmic canal is present (asterisk). The midpiece (pi) is strongly asymmetrical, and contains the spherical mitochondria (m) and vesicles (v). The flagellar membrane has some vesicles and the flagellum. Legends: d: distal centriole, f: flagellum, m: mitochondria, n: nucleus, p: proximal centriole, v: vesicle, asterisk: cytoplasmic canal, arrow: nuclear fossa.
Fig. 4 in Sperm evolution in the family Alestidae with comparative data for the genus Chalceus (Ostariophysi: Characiformes)
Fig. 4. Spermatozoon of Brachypetersius altus. a, b, c: longitudinal sections. d, e, f, g, h, i: transverse sections from top to posterior region. The nucleus (n) is spherical and lies medial to the flagellum (f). The centriolar complex (p, d) and nuclear fossa (arrow) is medial. The proximal centriole (p) is in a right angle relative to the distal centriole (d). The cytoplasmic canal is present (asterisk). The midpiece (pi) is asymmetrical, and contains the branched or "c" shape mitochondria (m), vesicles (v) and a cytoplasmic sleeve (arrowhead). Legends: a: axoneme, cr: concentric membranous rings, d: distal centriole, f: flagellum, m: mitochondria, n: nucleus, p: proximal centriole, v: vesicle, asterisk: cytoplasmic canal, arrow: nuclear fossa, arrowhead: cytoplasmic sleeve.
Fig. 9 in Sperm evolution in the family Alestidae with comparative data for the genus Chalceus (Ostariophysi: Characiformes)
Fig. 9. Spermatozoon of Chalceus epakros. a, b: longitudinal sections. c, d: transverse sections from top to posterior region. The nucleus (n) is spherical and lies medial to the flagellum (f). The centriolar complex (p, d) and nuclear fossa (arrow) is medial. The proximal centriole (p) is in a right or oblique angle relative to the distal centriole (d). The cytoplasmic canal is present (asterisk). The midpiece (pi) is asymmetrical, and contains only one "c" shape mitochondria (m), vesicles (v) and a cytoplasmic sleeve (arrowhead). The flagellum has lateral fins (fi). Legends: cr: concentric membranous rings, d: distal centriole, e: electron-lucent areas, f: flagellum, fi: flagellar fins, m: mitochondria, n: nucleus, p: proximal centriole, v: vesicle, asterisk: cytoplasmic canal, arrow: nuclear fossa, arrowhead: cytoplasmic sleeve.
Fig. 6 in Sperm evolution in the family Alestidae with comparative data for the genus Chalceus (Ostariophysi: Characiformes)
Fig. 6. Spermatozoon of Brycinus lateralis. a, b, c: longitudinal sections. d, e, f, g, h, i, j: transverse sections from top to posterior region. The nucleus (n) is spherical and lies medial to the flagellum (f). The centriolar complex (p, d) and nuclear fossa (arrow) is medial. The proximal centriole (p) is in a right angle relative to the distal centriole (d). The cytoplasmic canal is present (asterisk). The midpiece (pi) is asymmetrical, and contains the spherical mitochondria (m), vesicles (v) and a cytoplasmic sleeve (arrowhead). Legends: a: axoneme, cr: concentric membranous rings, d: distal centriole, e: electronlucent areas, f: flagellum, m: mitochondria, n: nucleus, p: proximal centriole, v: vesicle, asterisk: cytoplasmic canal, arrow: nuclear fossa, arrowhead: cytoplasmic sleeve.
Figure 4 in Rehabilitation of Bryconaethiops yseuxi Boulenger, 1899 (Characiformes: Alestidae) from the Congo River basin, Africa
Figure 4. Distribution of Bryconaethiops yseuxi Boulenger, 1899. (.) Localities of examined specimens; (O) localities based on literature data (after Roberts and Stewart 1976).
Figure 44 in The family Alestidae (Ostariophysi, Characiformes): a phylogenetic analysis of a trans-Atlantic clade
Figure 44. Hypothesis of relationships within the Alestidae, indicating the drift-vicariance hypothesis and the age of the oldest fossil alestids assigned to particular clades in this study.
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