Best Fish & Plants for Low-Light Aquariums

Discover the best low-light aquarium fish and plants for dimly lit setups. Create a thriving aquascape without intense lighting. Expert tips from Overseas Aquatics.

Introduction

Not every aquarium needs bright lights and high-tech gear to thrive. In fact, aquascapes
can be just as vibrant, peaceful, and beautiful—while being easier to maintain and more budget-friendly. Whether you’re setting up a tank in a softly lit room, want to reduce algae growth, or are simply going for a calm, natural vibe, a dimly lit setup might be perfect for you.

At Overseas Aquatics, we’re passionate about making aquatic ecosystems flourish—bright or shaded. This guide will walk you through the best low-light fish and plant choices, along with setup tips to help your tank thrive.

Best Fish for Low-Light Aquariums

The right fish can truly shine, even in subtle lighting. Many species naturally come from darker riverbeds, densely planted areas, or forest streams where sunlight is limited. These species feel more comfortable and behave more naturally in lower light conditions.

Betta Fish (Betta splendens)

Elegant and full of personality, Bettas actually prefer lower light. They originate from murky, slow-moving waters in Southeast Asia.

Great for small tanks (5+ gallons)
Require gentle filtration
Prefer shaded resting spots

Kuhli Loaches

These snake-like bottom dwellers are nocturnal and do best in shadowy environments with plenty of hiding places.

Ideal for peaceful community tanks
Thrive in soft substrates
Very active during the evening

Corydoras Catfish

One of the most popular community fish, Corydoras are hardy, social, and low-light friendly.

Best kept in groups of 5 or more
Constantly scavenging and cleaning
Peaceful and beginner-friendly

Cherry Barbs

Cherry Barbs are vibrant, active swimmers that adapt well to a variety of light conditions.

Their red coloration stands out in darker tanks
Slightly more active with ambient light
Can be kept singly or in peaceful groups

Celestial Pearl Danios (Galaxy Rasboras)

These tiny, shimmering fish are perfect for nano tanks and do surprisingly well in subdued lighting.

Peaceful and shy
Look best with dark substrates and indirect light
Thrive in planted tanks

Dwarf or Honey Gouramis

Gouramis love planted, slow-moving environments. Their subtle iridescence still shows beautifully in lower light.

Need surface access for breathing
Prefer calm tankmates
Love floating plants

Best Low-Light Aquarium Plants

Plants bring oxygen, natural filtration, and aesthetic beauty to your tank—but not all need intense lighting to thrive. These hardy species are perfect for low-light aquascapes
and pair beautifully with the fish listed above.

1. Java Fern (Microsorum pteropus)

A staple in any low-light tank, Java Fern is slow-growing, undemanding, and visually striking.

Grows attached to driftwood or rocks
Needs no special substrate
Tolerates a wide range of water conditions

2. Anubias Species

With strong, broad leaves and a natural look, Anubias is one of the best low-light plants.

Extremely low maintenance
Grows slowly but steadily
Great for foreground or midground

3. Cryptocoryne (Crypts)

These lush plants add depth and texture to aquascapes. They’re perfect for beginners.

Very adaptable to low light and varied conditions
Some species may “melt” initially but bounce back
Beautiful in groups

4. Java Moss

Java Moss is a versatile, fast-growing plant that looks great in natural setups.

Can be attached to rocks, wood, or mesh
Provides excellent cover for fry and shrimp
Great for breeding tanks

5. Amazon Sword (Echinodorus)

Though it does better with root tabs and slightly higher light, Amazon Sword can adapt to low light environments.

Grows large—best for the background
Root feeder—plant in nutrient-rich substrate
Offers a lush, jungle look

Equipment & Setup Tips for Low-Light Aquariums

Low-light setups are not only beautiful—they’re also easier to maintain. Here’s how to optimize your setup:

Use adjustable LED lighting: Dimmable LEDs allow you to fine-tune your tank’s ambiance and simulate natural day/night cycles.
Add floating plants: Duckweed or Frogbit soften harsh lighting and provide natural shade.
Choose darker substrates: Fish colors pop more against black or dark brown gravel.
Keep algae under control: Low light reduces algae growth significantly.
Limit direct sunlight: Prevents temperature swings and algae blooms.

Final Thoughts

Low-light aquariums offer a serene and natural atmosphere, ideal for both beginner and experienced aquarists. With the right combination of plants, fish, and design choices, you can build a lush underwater world that thrives with minimal lighting.

At Overseas Aquatics, we offer a curated selection of low-light-tolerant fish and plants, perfect for your dimly lit aquascape. Whether you’re just starting or refreshing an existing tank, we’re here to help you build a peaceful, low-maintenance environment your aquatic pets will love.