Endler’s Livebearers: The Picasso Fish of the Aquatic World


【Child】 This aquarium setup reminds me of that poem by Robert Frost, “The Road Not Taken.” It makes me wonder, what is that vibrant and curious little fish swimming in the water without a care in the world?

【Professor】 Ah, that’s a lovely reference. The fish you’re admiring is known as the Endler’s Livebearer, or simply Endler’s. They’re quite a fascinating species, you see. In this article, we’ll be diving into their distinctive features, natural habitats, husbandry requirements, behavior, breeding, and cautions for keeping them in an aquarium.

2. Characteristics

【Child】 Their colors and patterns are so vivid! They look like small aquatic Picassos, don’t you think? I’m curious about their size, shape, and other distinctive features.

【Professor】 Picasso, you say? That’s an interesting way of putting it. Endler’s are indeed quite colorful, with mesmerizing combinations of blue, green, red, and orange shades. Males are especially vibrant, which helps them attract females during mating. As for their size, they are small fish, usually only about 0.8–1.5 inches long. They have slender, torpedo-shaped bodies, making them agile swimmers. Female Endler’s have rounded bodies, which is unique compared to similarly sized guppy species.

3. Habitat

【Child】 Where exactly can these swimming Van Goghs be found in the wild? And how can we best replicate their natural environment in an aquarium?

【Professor】 I must say, I’m thoroughly enjoying your art-inspired analogies. Endler’s originate from northeastern Venezuela, where they inhabit small, clear pools and slow-moving streams. In an aquarium, it’s essential to provide them with an environment that mimics these conditions. This includes plenty of live plants and hiding spots, along with gently flowing water. Keep in mind that Endler’s play an important role in their ecosystem by controlling insect larvae and algae populations.

4. Husbandry Requirements

【Child】 To keep our living masterpieces happy and healthy in an aquarium, what conditions are necessary regarding water temperature, pH, hardness, tank size, and feeding?

【Professor】 Well said, my little art enthusiast! Endler’s thrive in warm water, so maintaining a temperature between 72-80°F (22-27°C) is ideal. When it comes to water quality, they prefer a pH of 6.5-7.5 and slightly hard to moderately hard water. For housing, a 5-gallon tank is suitable for small groups, though a larger tank is advisable for larger schools. Endler’s have a voracious appetite and do well on a diet of quality live, frozen, or flake foods.

5. Behavior

【Child】 In terms of their habits, are they night owls like Van Gogh and his famous “Starry Night”? And how do they typically behave when it comes to feeding and other activities?

【Professor】 I’m loving your inquisitiveness! Endler’s are diurnal, which means they are active during the day rather than nighttime. They are quite social and prefer living in groups called schools. These charming fish are known for their playful swimming and peaceful nature, making them a joy to watch. When it comes to feeding, they tend to be quite active and aggressive, so make sure you provide enough food for everyone in the tank.

6. Breeding

【Child】 If I were to play matchmaker in the aquatic world, what sort of conditions and methods should I follow for breeding these captivating creatures?

【Professor】 Ah, initiating a little underwater romance, are we? To enable successful breeding, it’s important to maintain the ideal water conditions mentioned earlier. Separate the males and females to increase the chances of courtship behaviors. Once they start displaying interesting color displays and dance-like movements, know that love is in the water! After the females have given birth, it’s wise to separate the young from the adults to avoid predation.

7. Cautions

【Child】 When raising these vibrant aquatic beings, are there any potential concerns or dangers regarding coexistence with other fish we should be aware of?

【Professor】 Excellent question. While Endler’s are generally peaceful fish, males can be territorial and show aggression towards each other during breeding seasons. To avoid this, provide ample space and hiding spots in the tank. When selecting tankmates, choose other small, peaceful fish species, as aggressive or larger ones may intimidate or prey upon your delightful Endler’s.

8. Conclusion

【Professor】 Well, my young aspiring aquarist, we’ve explored the enchanting world of Endler’s, understanding their characteristics, habitat, husbandry requirements, behavior, breeding, and precautions for keeping them in an aquarium. And through it all, you’ve added a touch of artistic flair with your delightful insights. Armed with this knowledge, I hope you can now proudly invite these dazzling fish into your own aquatic masterpiece.


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