Blue Panchax (Aplocheilus panchax) is an intermediate-level freshwater fish that needs at least 20 gallons and 72-82°F. A slim surface-dwelling killifish with a yellow-gold body and a bright blue-edged tail. It will swallow baby fish and very small shrimp, and it jumps, so it needs a snug lid and floating plants for cover.
Care facts at a glance
| Scientific name | Aplocheilus panchax |
|---|---|
| Family | Aplocheilidae |
| Origin | India and Southeast Asia |
| Adult size | 3 in |
| Minimum tank | 20 gallons |
| Temperature | 72-82°F |
| pH | 6.5-7.8 |
| Temperament | Peaceful with similar-size fish, eats fry and tiny fish |
| Social behavior | Small groups; males squabble |
| Swim level | Top |
| Difficulty | Intermediate |
| Diet | Carnivore: live and frozen foods, flakes, small insects |
| Typical lifespan | 2-3 years |
Quick tips
- Use a tight lid; it jumps readily.
- Do not mix with tiny fish or fry.
- Keep one male with a few females to reduce squabbling.
San Diego water
Tolerates San Diego's hard, alkaline tap water (pH roughly 7.6-8.6) with slow acclimation and a conditioner that handles chloramine. 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