Killifish (Aphyosemion, Aplocheilus and related species) is a intermediate-level freshwater fish that needs at least 10 gallons and 70-78°F. Often brightly colored, jump-prone fish that sit near the surface. Many are short-lived. Use a tight lid.
Care facts at a glance
| Scientific name | Aphyosemion, Aplocheilus and related species |
|---|---|
| Family | Aplocheilidae |
| Origin | Africa, Asia, Americas |
| Adult size | 2-4 in |
| Minimum tank | 10 gallons |
| Temperature | 70-78°F |
| pH | 6.0-7.5 |
| Temperament | Peaceful to semi-aggressive |
| Social behavior | Pairs or trios |
| Swim level | Upper |
| Difficulty | Intermediate |
| Diet | Small live and frozen foods, micro pellets |
| Typical lifespan | 1-5 years |
Quick tips
- Use a tight lid.
- Offer live or frozen foods.
San Diego water
Captive-bred stock usually adapts to San Diego tap water with slow acclimation. For best color and health, many keepers blend tap with RO/DI water. Learn the numbers in our San Diego tap water guide.
Before you buy
Make sure your tank is cycled (how to cycle a tank), check your numbers with the water testing guide, and use the compatibility guide to check tankmates. These are general ranges; individual fish and local water vary.
Find it at Pet Zone
Pet Zone Tropical Fish is a San Diego aquarium store with two locations. Stock changes daily, so call ahead if you are after a specific species or plant. Shop online at petzonesd.com.
4160 Convoy St, San Diego, CA 92111
(858) 987-0309
Open daily, 10am-6pm
Aquascaping, planted tanks
4266 University Ave, San Diego, CA 92105
(619) 283-1812
Closed Monday; Tue-Fri 10:30am-6pm, Sat 11am-6pm, Sun 11am-4pm
Monster fish, koi