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88 results for “Rhamphichthyidae”
FIGURE 3 in A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae)
FIGURE 3 | Scatter plots of principal component scores of 10 measurements. A. PC1 vs. PC2. B. PC1 vs. PC3. All seven species of Rhamphichthys: red = R. apurensis; blue R. drepanium; pink = R. hahni; yellow = R. heleios; pale green = R. lineatus; brown = R. pantherinus; and grey = R. rostratus. Grey circles in B represent the three putative morpho groups (G 1–3).
Fig. 11 in Redescription and phylogenetic position of the enigmatic Neotropical electric fish Iracema caiana Triques (Gymnotiformes: Rhamphichthyidae) using x-ray computed tomography
Fig. 11. Opercle shape. (a) Rhamphichthys drepanium, UF 78066; (b) Gymnorhamphichthys rosamariae, MCP 24359; and (c) Hypopomus artedi, ANSP 177489. Lateral view of left side. Anterior to left. Scale bar is 5 mm.
Fig. 10 in Redescription and phylogenetic position of the enigmatic Neotropical electric fish Iracema caiana Triques (Gymnotiformes: Rhamphichthyidae) using x-ray computed tomography
Fig. 10. Scale shape above the lateral line at about two thirds of body. (a) Iracema caiana, MZUSP 49205; (b) Rhamphichthys marmoratus, MZUSP 49205; (c) Gymnorhamphichthys rosamariae, MCP 24359; and (d) Hypopomus artedi, ANSP 177489. Lateral view of left side.Anterior to left. Scale bar is 1 mm.
Fig. 7 in Redescription and phylogenetic position of the enigmatic Neotropical electric fish Iracema caiana Triques (Gymnotiformes: Rhamphichthyidae) using x-ray computed tomography
Fig. 7. Branchial basket and branchiostegals rays of left side of Iracema caiana (MZUSP 49205, 235 mm SL). (a) Lateral view; (b) Midsagittal view. Anterior to left. Scale bar is 5 mm. Abbreviations: bh+bb1 = basihyal +basibranchial 1; bb2 = basibranchial 2; bb3 = basibranchial 3; vhh = ventral hypohyal; dhh = dorsal hypohyal; ach = anterior ceratohyal; pch = posterior ceratohyal; uh = urohyal; br = branchiostegals; cb = ceratobranchial; eb = epibranchial; and tp = pharyngobranchial tooth plate.
Fig. 6 in Redescription and phylogenetic position of the enigmatic Neotropical electric fish Iracema caiana Triques (Gymnotiformes: Rhamphichthyidae) using x-ray computed tomography
Fig. 6. Opercular series of the left side of Iracema caiana series in lateral view (except branchiostegals; MZUSP 49205, 235 mm SL). Abbreviations: pop = preopercle; iop = interopercle; sop = subopercle; and op = opercle.
Fig. 5 in Redescription and phylogenetic position of the enigmatic Neotropical electric fish Iracema caiana Triques (Gymnotiformes: Rhamphichthyidae) using x-ray computed tomography
Fig. 5. Suspensorium and oral jaws of the left side of Iracema caiana (MZUSP 49205, 235 mm SL). (a) Lateral view; (b) Midsagittal view. Anterior to left. Scale bar is 5 mm. Abbreviations: p = premaxilla; m = maxilla; ant = antorbital; d = dentary; cm = coronomeckelian bone; ang = anguloarticular; rar = retroarticular; enp = endopterygoid; q = quadrate; ib = intermuscular bones of adductor mandibulae; sym = symplectic; mpt = metapterygoid; and h = hyomandibula.
Fig. 4 in Redescription and phylogenetic position of the enigmatic Neotropical electric fish Iracema caiana Triques (Gymnotiformes: Rhamphichthyidae) using x-ray computed tomography
Fig. 4. Skull roof and brain case of the left side of Iracema caiana (MZUSP 49205, 235 mm SL). (a) Lateral view; (b) Midsagittal view. Anterior to left. Scale bar is 5 mm. Abbreviations: v = ventral ethmoid+vomer; met = mesethmoid; pas = parasphenoid; fr = frontals; obs = orbitosphenoid; pts = pterosphenoid; pro = prootic; spo = sphenotic; pto = pterotic; pa = parietal, bo = basioccipital; exo = exoccipital; epo = epioccipital; and soc = supraoccipital.
Fig. 8 in Redescription and phylogenetic position of the enigmatic Neotropical electric fish Iracema caiana Triques (Gymnotiformes: Rhamphichthyidae) using x-ray computed tomography
Fig. 8. Weberian apparatus of right side (image reversed) of Iracema caiana (MZUSP 49205, 235 mm SL). Left side ribs and parapophysis removed. Anterior to left. Scale bar is 5 mm. Abbreviations: c1-c2 = centrum; s= scaphium; i = intercalarium; os = os suspensorium; t = tripus; bl = Baudelot's ligament; na3-na4 = neural arches; sn = supraneural; ns = neural spine; pp4 = parapophysis 4 and r5-r6 = ribs.
Fig. 3 in Redescription and phylogenetic position of the enigmatic Neotropical electric fish Iracema caiana Triques (Gymnotiformes: Rhamphichthyidae) using x-ray computed tomography
Fig. 3. Lateral view of the skull and cleithral region of Iracema caiana, (a) MZUSP 49205, 235 mm SL, scale bar is 5 mm; (b) MZUSP 49205, 345 mm SL, snout bent upwards due to preservation artifact. Scale bar is 10 mm.
Fig. 1. Iracema caiana, MZUSP 49205 in Redescription and phylogenetic position of the enigmatic Neotropical electric fish Iracema caiana Triques (Gymnotiformes: Rhamphichthyidae) using x-ray computed tomography
Fig. 1. Iracema caiana, MZUSP 49205 (paratypes). Specimens used for the CT-scan images: above 235 mm SL, below 345 mm SL.
FIGURE 31 in A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae)
FIGURE 31 | Holotype of Rhamphichthys lineatus, MNHN 3982, 530 mm LEA, lake near Río Ucayali, Peru.
FIGURE 33 in A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae)
FIGURE 33 | Rhamphichthys lineatus, UF 116566, 390 mm LEA, Río Nanay, Loreto, Peru.
FIGURE 38 in A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae)
FIGURE 38 | Holotype of Rhamphichthys marmoratus, MNHN 3959, Rio Araguaia, Brazil.
FIGURE 63 in A taxonomic review of the Neotropical electric fish Rhamphichthys (Gymnotiformes: Rhamphichthyidae)
FIGURE 63 | Distribution of Rhamphichthys rostratus based on examined museum specimens.
Fig. 2 in Redescription and phylogenetic position of the enigmatic Neotropical electric fish Iracema caiana Triques (Gymnotiformes: Rhamphichthyidae) using x-ray computed tomography
Fig. 2. Head of Iracema caiana, MZUSP 49205 (paratype), 345 mm SL.
FIGURE 2. Hypopygus varii, MNRJ 46752 in A new species of Hypopygus Hoedeman (Gymnotiformes: Rhamphichthyidae) from the rio Trombetas system, Amazon basin, Brazil
FIGURE 2. Hypopygus varii, MNRJ 46752, holotype, 89.0 mm LEA. Head and anteriomost portion of body. Scale bar: 10 mm. Arrow indicates anus position.
FIGURE 4 in A new species of Hypopygus Hoedeman (Gymnotiformes: Rhamphichthyidae) from the rio Trombetas system, Amazon basin, Brazil
FIGURE 4. Strict consensus tree of four fundamental most parsimonious cladograms (length 55, CI = 0.89, RI = 0.92) showing phylogenetic relationships between Hypopygus species. See text for details and discussion.
FIGURE 3 in A new species of Hypopygus Hoedeman (Gymnotiformes: Rhamphichthyidae) from the rio Trombetas system, Amazon basin, Brazil
FIGURE 3. Map of northern South America showing approximate type-localities of Hypopygus species. Square: Hypopygus varii; circles: 1 = H. benoneae; 2 = H. cryptogenes; 3 = H. hoedemani; 4 = H. isbruckeri; 5 = H. lepturus; 6 = H. minissimus; 7 = H. neblinae; 8 = H. nijsseni; 9 = H. ortegai.
FIGURE 1. Hypopygus varii, MNRJ 46752 in A new species of Hypopygus Hoedeman (Gymnotiformes: Rhamphichthyidae) from the rio Trombetas system, Amazon basin, Brazil
FIGURE 1. Hypopygus varii, MNRJ 46752, holotype, 89.0 mm LEA, Brazil, Pará, Oriximiná, igarapé Saracá. (a) Left lateral view of body; (b) dorsal view of same specimen, head to left. Scale bar: 10 mm.
Fig. 1 in First chromosomal analysis of Gymnorhamphichthys britskii: the remarkable lowest diploid value within the family Rhamphichthyidae (Gymnotiformes)
Fig. 1. Location of Dourado stream in the upper Paraná River basin where Gymnorhamphichthys britskii individuals were captured. The dark circle indicates the sampling spots.
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