| U.S. Range in the Pacific Ocean |
British Columbia to Baja (Eschmeyer and Herald 1983) |
| Habitat |
Estuary, sloughs, lagoons (Eschmeyer and Herald 1983) |
| Substrate |
Sand or mud (Eschmeyer and Herald 1983) |
| Behavior |
Uses burrows for shelter (Eschmeyer and Herald 1983) |
| General Salinity Range (ppt) |
In salt and freshwater (Eschmeyer and Herald 1983) |
| Maximum Overall Recorded Size (cm) |
5.2 (Carter 1965 in Emmett et al. 1991) |
| Average Maximum Overall Length (cm) |
5.7 (Eschmeyer and Herald 1983) |
| Overall Maximum Age (years) |
2–3 (Prasad 1948 in Emmett et al. 1991) |
| Overall Age at Maturity (years) |
1 (Emmett et al. 1991) |
| Overall Length at Maturity (cm) |
2.9 (Emmett et al. 1991) |
| Female Length at Maturity (cm) |
3.4 all are mature (Prasad 1948 in Emmett et al. 1991) |
| Type of Reproduction |
Gonochoristic, oviparous, iteroparous (Emmett et al. 1991) |
| Fecundity |
300–1200 (Brothers 1975 in Emmett et al. 1991) |
| Spawning Behavior |
Unlike other gobies– does not build nest or guard young (Eschmeyer and Herald 1983)
Males are aggressive (Macdonald 1975 in Emmett et al. 1991)
15–25 eggs laid at a time (MacGinitie 1935 in Emmett et al. 1991) |
| Time of Year of Spawning |
March–June (Eschmeyer and Herald 1983)
May spawn year-round (Brothers 1975 in Emmett et al. 1991) |
| Spawning/Salinity Relationship |
Polyhaline or euhaline (Wang 1986 in Emmett et al. 1991)
Yellow (Emmett et al. 1991) |
| Description of Eggs |
Semi-adhesive, demersal (Emmett et al. 1991) |
| Habitat where Eggs are found |
Mud, sand, gravel (Wang 1986 in Emmett et al. 1991) |
| Days to Hatch |
10–12 at 15°C (Emmett et al. 1991) |
| Temperature for Egg Survival (°C) |
Above 10 (Wang 1986 in Emmett et al. 1991) |
| Habitat where Larvae are found |
Pelagic (Emmett et al. 1991) |
| Larval Food Preference |
Copepod (Emmett et al. 1991) |
| Habitat where Juveniles are found |
Demersal (Emmett et al. 1991) |
| Length when Juvenile Settles out (cm) |
1.4 (Prasad 1948 in Emmett et al. 1991) |
| Temperature for Juvenile Survival (°C) |
4–26 (Prasad 1948 in Emmett et al. 1991) |
| Salinity for Juvenile Survival (ppt) |
Oligohaline and euhaline water (California Department of Fish and Game 1987 in Emmett et al. 1991) |
| Juvenile Food Preference |
Copepods, Ostracods, Nematodes, Oligochaetes, Amphipods (Prasad 1948 in Emmett et al. 1991) |
| Habitat where Adults are found (depth in meters) |
Demersal (Emmett et al. 1991) |
| Temperature for Adult Survival (°C) |
4–26 (Prasad 1948 in Emmett et al. 1991) |
| Salinity for Adult Survival (ppt) |
Oliogohaline and euhaline water (California Department of Fish and Game 1987 in Emmett et al. 1991) |
| Ornamental Market |
Easy to keep in an aquarium (Reish and Lemay 1988 in Emmett et al. 1991) |
| Additional Remarks |
"...excellent bioassay organism" (Reish and Lemay 1988 in Emmett et al. 1991) |
