Magnificent Killifish (Simpsonichthys magnificus)
For the safety of our animals, we now ship live fish exclusively via UPS Next Day Air. If your order contains this item, you will only see UPS Next Day Air as a shipping option during checkout.
These fish may exhibit slight fin imperfections from natural nipping during group housing. This is cosmetic only and does not affect long-term health.
Species Overview
A breathtaking showcase of color and pattern, the Magnificent Killifish (Simpsonichthys magnificus) is a standout among South American annual killifish. Each purchase includes a sexed male–female pair, allowing hobbyists to enjoy their natural behaviors and easily explore breeding. Males display vibrant, iridescent colors, especially during breeding season, while females are more subdued but still striking.
| Feature | Detail |
|---|---|
| Species | Simpsonichthys magnificus |
| Sexed Pair Included | Yes |
| Origin | South America |
| Lifespan | 1–2 years |
| Water Temperature | 72–78°F |
FAQ
Are the fish shipped with a male and female pair?
Yes, each purchase includes a sexed male–female pair.
Can the fish be kept in a community tank?
Please contact customer service
What should I do if I notice fin damage upon arrival?
Slight fin imperfections are common due to natural nipping during group housing and are cosmetic only, not affecting long-term health.




Pippa Welch –
The Magnificent Killifish are stunning with vivid colors. I received a male and female pair, and they’ve been active and healthy since arrival. The packaging was secure and the shipping was fast. A great addition to my tank.
Ava Forsyth –
The fish arrived in good condition and showed vibrant colors. The pair interacted well, and I could see the male displaying during the day. Minor fin nipping was noticeable but didn’t affect their health.
Benjamin Reid –
Highly recommended for killifish enthusiasts. The coloration is exceptional, and the sexed pair makes breeding observation easy. Easy to care for and very active in the tank.