Bass might not be the first fish that pops into your head when you’re planning an aquaponics setup, but it’s actually a strong option worth considering. It handles neglect reasonably well, stays hardy through changing conditions, and eats well too. What many beginners don’t realize is that “bass” covers several distinct species, so it pays to get familiar with them before deciding which one fits your system best.
Types of Bass
Several bass species can thrive in a home aquaponics system. Here’s a look at the most commonly kept ones to help you find the right match:
Largemouth Bass
Sometimes called the wide-mouth, bigmouth, or bucketmouth, this fish earns every one of those nicknames from its oversized jaw. There are two recognized strains: Florida and northern. The Florida strain grows larger and lives longer, but it’s far less tolerant of cold, so it only makes sense in warm climates or with a reliable water heater. Color-wise, expect an olive-green body marked with a dark horizontal stripe along each side. It’s the biggest of the black bass group, capable of reaching 30 inches and 25 pounds in the wild. The northern strain trains well but is a known jumper, so plan on a secure tank lid.
Smallmouth Bass
As the name suggests, this one has a noticeably smaller mouth than its largemouth cousin. Also known as the brown bass, smallie, or bareback bass, it’s a freshwater fish found in the cooler, more temperate parts of North America and typically brown in color. Look for its striking red eyes. This is a smaller fish overall, topping out around 4-6 inches and 3 pounds.
Hybrid Striped Bass
A cross between striped bass and white bass, this one goes by names like Whiterock bass or wiper. It resembles the striped bass but with broken rather than solid stripe patterns along its silver body. One important caveat: this hybrid can’t handle elevated potassium levels, which matters because potassium is sometimes added to aquaponics water to boost plant growth.
Australian Bass
Native to the coastal streams and rivers of Australia, this species comes in a range of colors — gold, red, green, and brown among them. It has the most elongated body of any bass variety and a forked tail. Adults typically reach 8 to 12 inches and up to a pound. One thing to watch for: sharp, flat spines on the gill covers that can cut you if you’re not careful handling them.
White Bass
Also known as the sand bass, this freshwater species is common throughout the American Midwest. Despite the name, coloring ranges from silvery-white to pale green, with a lighter-colored belly than back and thin dark stripes running along the sides.
How Fast Bass Grow
Growth speed depends on tank size, feeding volume, and which species you’re raising, but on average bass reach 2 to 8 inches in their first year. Full growth — around 10 inches — typically takes about two more years after that. For eggs to hatch successfully, keep water between 65°F and 75°F, with 72°F being the sweet spot. A protein-rich diet can speed up growth further. Fertilized eggs usually hatch within two days, and the resulting fry grow quickly, typically reaching 2 inches by the six-month mark.
Best Temperature Range for Bass
Bass handle temperature swings remarkably well, tolerating anywhere from 55°F to 85°F without much change in behavior or growth. That flexibility makes them a solid choice even if your winters run cold — and remember, this refers to water temperature, not air temperature. The warmer end of that range tends to make fish more active, which means more feeding and more waste output for your plants to use. Aim to keep ammonia under 1ppm, dissolved oxygen between 3-10mg/L, and pH between 7 and 8.
Bass Aquaponics: Advantages and Drawbacks
Before committing to any fish species, it helps to weigh the pros and cons. Here’s what stands out about raising bass:
Advantages
- Hardy: Bass tolerate both warm and cold water and handle swings in ammonia and pH better than most people expect, though drastic shifts can still affect their behavior.
- Surface feeders: Since bass feed at the water’s surface, you can easily judge portion sizes — if food starts sinking uneaten, you’re overfeeding.
- Low protein needs: Bass don’t require a particularly protein-heavy diet, which simplifies feeding.
- Great flavor: Every bass species is known for tasting good, and they hold up well to virtually any cooking method if you plan to harvest them.
Drawbacks
- Potassium sensitivity: Excess potassium in the water can make bass sick; a supplement to manage levels is usually enough to prevent this.
- Setup time: Like any aquaponics system, getting things dialed in takes patience, and you should expect some fish losses along the way as you learn the ropes.
Bass Aquaponics FAQ
What should you feed bass in a tank?
Bass generally don’t feed off the bottom, so choose food that floats or sinks very slowly. Anything that settles to the bottom uneaten goes to waste and can degrade water quality. In an aquaponics system, bass will eat worms, insects, and pellet feed readily. In the wild they’d also go after crayfish, shrimp, and smaller fish — the more variety you offer, the better they tend to do.
Are bass carnivorous?
Yes. Bass aren’t picky and will eat nearly anything that fits in their mouth, including other fish, insects, and some plant matter.
Can bass be housed with other fish species?
Bass generally coexist well with fish like catfish and trout. Just make sure any tankmates are similarly sized — even if they won’t eat each other outright, bass can bully noticeably smaller fish.
Where can you source bass for an aquaponics system?
Your best bet is an aquaponics supplier, and if none are near you, ordering online is an option. Keep in mind before you commit that bass are slow growers — reaching full size can take up to three years. That’s fine if your main goal is nutrient production for your plants, but less ideal if you’re hoping to harvest fish on a shorter timeline.