Mugilogobius cavifrons
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2025
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| author | Li, Hsien-En Luo, Zhi-Xiang Lin, Bao-Yang Shy, Jhy-Yun Chen, I-Shiung |
| author_facet | Li, Hsien-En Luo, Zhi-Xiang Lin, Bao-Yang Shy, Jhy-Yun Chen, I-Shiung |
| contents | <p><b><i>Mugilogobius cavifrons</i> (Weber, 1909)</b></p><p>Figures 1A, 2A, 3</p><p><b>Materials Examined</b></p><p>NTOUP-2025-11-012, 4 ind., 32.7–46.8 mm SL, outlet of PHU brackish pond, coll. B.-Y. Lin, 19 April 2025.</p><p><b>Diagnosis</b></p><p>D2. I, 8; A. I, 8; P1 15–16; LR. 45–47; TR. 14; Pred. 21–23.</p><p>Body with lightning-like dark transverse bands. D1 with an oval shaped blotch, third spine longest.</p><p><b>Redescription</b></p><p>Morphometric percentages shown in table 2. Body robust, slightly slender in female individuals. Head bulbous (distinct in males). Mouth slightly oblique, gape larger in males. Anterior nostril with a tubular opening while the posterior nostril is merely an oval-shaped hole. Vertebrae count 10+16=26 (4).</p><p><i>Fins.</i> See table 1 for meristic frequencies. D1 VI (4); D2 I, 8 (4); A I, 8 (4); P1 15 (1)–16 (3); P2 I, 5 (4). First dorsal fin in rounded rectangular shape, with the third spine only slightly longest. Second dorsal fin origin slightly anterior to the anal fin origin. Pelvic fin oval shaped. Caudal fin rounded.</p><p><i>Squamation.</i> See table 1 for meristic frequencies. LR 45 (1), 46 (1) or 47 (2); TR 14; Pred 21 (1), 22 (2) or 23; D-P 11 (1)–12 (3). Body covered in both ctenoid and cycloid scales. Predorsal region mostly covered in rather large cycloid scales until the vertical of preopercle, and thoracic region with small cycloid scales. Cheeks naked. dorsal regions of operculum with patches of small cycloid scales.</p><p><i>Cephalic sensory organs.</i> See figure 3 for detailed sensory organ patterns. All canal pores absent. Sensory papillae in longitudinal pattern. For the infraorbital papillae rows: row <i>a</i> short, about the same length as orbit; row <i>b</i> extends until the posterior edge of preopercle; row <i>cp</i> and <i>d</i> in almost equal length. Opercle rows all separated. The chin row <i>f</i> in a pair of 2 papillae.</p><p><i>Live coloration.</i> See figure 1A. Body in brownish yellow while male individuals express dark colorations under stress. Body lined with about 7 diamond-like dark blotches, and caudal peduncle with 2 to 3 rows of lightning-like transverse bands. Head with numerous cloud-like blotches. D1 with a dusky margin and a transparent band, possessing metallic shade. Centre of D1 with a smear of dark blotch. D2 with a dusky margin with whitish band, posterior tip with a yellowish dash; a series of elliptical blotch lined up along D2. Anal fin yellowish thoroughly with a dark margin. Pectoral fins and pelvic fins dusky without pigmentations. Caudal fin with wavy brown stripes.</p><p><i>Coloration in preservatives.</i> See figure 2A. All bright colours fade away; whole body turn blackish and almost all body blotches become vague and indistinct.</p><p><b>Distribution and habitat</b></p><p>The species was collected near the coastal outlet pool of the NPU brackish pond, the substrates were rubble and the pool will be flooded with sea water during spring tide. The sympatric species being <i>Metopograpsus thukuhar</i> (Owen, 1839), <i>Ligia exotica</i> Roux, 1828, <i>Platorchestia</i> spp., Mugilidae spp., <i>Scatophagus argus</i> (Linnaeus, 1766) and <i>Lutjanus argentimaculatus</i> (Forsskål, 1775).</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_19138369 |
| institution | Zenodo |
| language | |
| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Mugilogobius cavifrons Li, Hsien-En Luo, Zhi-Xiang Lin, Bao-Yang Shy, Jhy-Yun Chen, I-Shiung Biodiversity Taxonomy Animalia Chordata Perciformes Gobiidae Mugilogobius Mugilogobius cavifrons <p><b><i>Mugilogobius cavifrons</i> (Weber, 1909)</b></p><p>Figures 1A, 2A, 3</p><p><b>Materials Examined</b></p><p>NTOUP-2025-11-012, 4 ind., 32.7–46.8 mm SL, outlet of PHU brackish pond, coll. B.-Y. Lin, 19 April 2025.</p><p><b>Diagnosis</b></p><p>D2. I, 8; A. I, 8; P1 15–16; LR. 45–47; TR. 14; Pred. 21–23.</p><p>Body with lightning-like dark transverse bands. D1 with an oval shaped blotch, third spine longest.</p><p><b>Redescription</b></p><p>Morphometric percentages shown in table 2. Body robust, slightly slender in female individuals. Head bulbous (distinct in males). Mouth slightly oblique, gape larger in males. Anterior nostril with a tubular opening while the posterior nostril is merely an oval-shaped hole. Vertebrae count 10+16=26 (4).</p><p><i>Fins.</i> See table 1 for meristic frequencies. D1 VI (4); D2 I, 8 (4); A I, 8 (4); P1 15 (1)–16 (3); P2 I, 5 (4). First dorsal fin in rounded rectangular shape, with the third spine only slightly longest. Second dorsal fin origin slightly anterior to the anal fin origin. Pelvic fin oval shaped. Caudal fin rounded.</p><p><i>Squamation.</i> See table 1 for meristic frequencies. LR 45 (1), 46 (1) or 47 (2); TR 14; Pred 21 (1), 22 (2) or 23; D-P 11 (1)–12 (3). Body covered in both ctenoid and cycloid scales. Predorsal region mostly covered in rather large cycloid scales until the vertical of preopercle, and thoracic region with small cycloid scales. Cheeks naked. dorsal regions of operculum with patches of small cycloid scales.</p><p><i>Cephalic sensory organs.</i> See figure 3 for detailed sensory organ patterns. All canal pores absent. Sensory papillae in longitudinal pattern. For the infraorbital papillae rows: row <i>a</i> short, about the same length as orbit; row <i>b</i> extends until the posterior edge of preopercle; row <i>cp</i> and <i>d</i> in almost equal length. Opercle rows all separated. The chin row <i>f</i> in a pair of 2 papillae.</p><p><i>Live coloration.</i> See figure 1A. Body in brownish yellow while male individuals express dark colorations under stress. Body lined with about 7 diamond-like dark blotches, and caudal peduncle with 2 to 3 rows of lightning-like transverse bands. Head with numerous cloud-like blotches. D1 with a dusky margin and a transparent band, possessing metallic shade. Centre of D1 with a smear of dark blotch. D2 with a dusky margin with whitish band, posterior tip with a yellowish dash; a series of elliptical blotch lined up along D2. Anal fin yellowish thoroughly with a dark margin. Pectoral fins and pelvic fins dusky without pigmentations. Caudal fin with wavy brown stripes.</p><p><i>Coloration in preservatives.</i> See figure 2A. All bright colours fade away; whole body turn blackish and almost all body blotches become vague and indistinct.</p><p><b>Distribution and habitat</b></p><p>The species was collected near the coastal outlet pool of the NPU brackish pond, the substrates were rubble and the pool will be flooded with sea water during spring tide. The sympatric species being <i>Metopograpsus thukuhar</i> (Owen, 1839), <i>Ligia exotica</i> Roux, 1828, <i>Platorchestia</i> spp., Mugilidae spp., <i>Scatophagus argus</i> (Linnaeus, 1766) and <i>Lutjanus argentimaculatus</i> (Forsskål, 1775).</p> |
| title | Mugilogobius cavifrons |
| topic | Biodiversity Taxonomy Animalia Chordata Perciformes Gobiidae Mugilogobius Mugilogobius cavifrons |
| url | https://doi.org/10.5281/zenodo.19138369 |