New records of two flap-headed gobies of genus Callogobius (Gobiiformes: Gobiidae) from Taiwan with an updated artificial key of Taiwanese congeners
Author
Li, Hsien-En
0000-0002-4190-7720
Institute of Marine Biology, National Taiwan Ocean University, Keelung, 202301, Taiwan, R. O. C.
iscfish@gmail.com
Author
Chen, I-Shiung
0000-0002-5964-3292
Institute of Marine Biology, National Taiwan Ocean University, Keelung, 202301, Taiwan, R. O. C. & Center for Excellence of the Oceans, National Taiwan Ocean University, Keelung, 202301, Taiwan, R. O. C.
seanlee22@hotmail.com
text
Zootaxa
2025
2025-12-30
5738
1
115
126
https://doi.org/10.11646/zootaxa.5738.1.15
journal article
314550
10.11646/zootaxa.5738.1.15
3330a209-61f0-4aa6-bd57-1a2e2ee4a176
1175-5326
19138263
CB2E6F9C-4402-4B17-AB77-623F264D9353
TABLE 1. Morphometric measurements of the two Callogobius species newly recorded in this study. All values were rounded to the second decimal.| Species | Callogobius shunkan | Callogobius stellatus |
|---|
| Sex | ♂ | ♀ | ♂ | ♀ |
|---|
| n | 23 | 20 | 1 | 1 |
|---|
| SL (mm) | 19.41–48.84 | 22.31–43.79 | 27.39 | 28.52 |
|---|
| Percent in standard length (%) |
|---|
| Head length | 29.01–33.18 (30.95) | 29.22–35.08 (31.91) | 26.63 | 27.37 |
|---|
| Predorsal length | 30.72–42.48 (38.10) | 36.93–42.46 (39.92) | 35.37 | 35.21 |
|---|
| Snout to 2nd dorsal origin | 41.66–64.88 (57.51) | 57.04–63.07 (59.60) | 57.29 | 57.64 |
|---|
| Snout to anus | 53.82–63.77 (57.11) | 50.53–63.65 (58.33) | 59.24 | 59.76 |
|---|
| Snout to anal fin origin | 58.68–66.05 (61.69) | 57.47–69.13 (63.23) | 65.53 | 64.00 |
|---|
| Prepelvic length | 28.56–35.74 (31.32) | 27.36–35.20 (32.16) | 28.34 | 29.19 |
|---|
| Caudal peduncle length | 23.04–31.61 (26.75) | 22.13–30.13 (25.98) | 16.45 | 17.76 |
|---|
| Caudal peduncle depth | 10.87–13.08 (12.08) | 9.03–13.24 (11.72) | 10.45 | 10.66 |
|---|
| 1st dorsal fin base | 14.48–19.53 (17.19) | 15.35–20.35 (17.34) | 19.98 | 20.33 |
|---|
| 2nd dorsal fin base | 21.25–25.34 (23.71) | 20.35–26.97 (23.52) | 30.61 | 28.74 |
|---|
| Anal fin base | 10.64–17.42 (15.21) | 12.64–17.09 (14.71) | 18.04 | 18.56 |
|---|
| Caudal fin length | 23.57–32.63 (27.77) | 22.70–31.33 (27.79) | 40.65 | 39.78 |
|---|
| Pectoral fin length | 26.54–30.58 (27.94) | 20.95–30.12 (26.23) | 27.89 | 29.52 |
|---|
| Pelvic fin length | 21.03–25.68 (22.78) | 20.30–25.09 (22.42) | 26.98 | 24.17 |
|---|
| Body depth at pelvic fin base | 14.32–17.77 (16.05) | 14.43–20.92 (17.16) | 15.28 | 14.55 |
|---|
| Body depth at anal fin base | 13.43–17.69 (15.46) | 12.93–17.75 (15.12) | 12.93 | 13.08 |
|---|
| Body width at anal fin base | 8.45–13.24 (10.88) | 9.23–12.82 (11.13) | 9.52 | 11.33 |
|---|
| Pelvic fin origin to anus | 22.21–31.58 (25.77) | 23.71–29.09 (26.32) | 28.53 | 29.24 |
|---|
| Percent in head length (%) |
|---|
| Head width in maximum | 67.68–77.43 (73.36) | 70.18–79.19 (74.63) | 72.69 | 77.66 |
|---|
| Posterior-most head width | 42.19–49.82 (45.99) | 39.34–47.12 (44.08) | 50.72 | 55.73 |
|---|
| Eye diameter | 16.80–24.62 (19.40) | 15.12–27.17 (20.53) | 15.72 | 15.11 |
|---|
| Bony interorbital width | 8.74–11.04 (9.85) | 7.21–10.80 (9.40) | 18.95 | 18.12 |
|---|
| Fleshy interorbital width | 40.82–42.76 (41.56) | 45.68–48.78 (47.65) | 38.60 | 36.86 |
|---|
| Snout length | 25.20–34.56 (29.00) | 23.60–36.88 (30.33) | 35.37 | 36.55 |
|---|
| Lower jaw length | 18.17–29.06 (24.77) | 24.41–31.38 (29.01) | 19.90 | 18.59 |
|---|
| Cheek depth | 21.38–36.82 (28.50) | 20.74–35.22 (26.60) | 30.27 | 27.44 |
|---|
| Postorbital length | 41.60–52.45 (48.26) | 40.34–48.63 (45.13) | 54.93 | 55.69 |
|---|