Pumpkinseed

Quick facts

Adult size

20 cm, 250 g typical harvest weight

Days to harvest

365 to 730 days from fingerling

Lifespan (max)

up to 10 years

Diet

omnivore

Temperature class

warm-water

Difficulty

beginner

Water parameters

Temperature range

4–28°C (optimum 24°C)

pH

6.5 to 8.5

Hardness

5 to 20 dGH

Minimum tank

300 L per individual at harvest size

Feed and growth

Feed protein

35% target

Daily feed (warm water)

2.50% of body weight per day

Daily feed (cool water)

0.70% of body weight per day

Max stocking density

25 g per litre of system water

A 250g adult eats about 6.3 g of feed per day at optimum temperature. For a roster of 10 fish at adult size, that's around 63 g of feed daily.

Legality

Aquaculture and possession rules vary by jurisdiction and change over time. This table reflects regulations as of the verified date on each row. Verify with your local fisheries or wildlife authority before stocking.

Jurisdictions not listed here default to "check local regulations". A non-listing is not a green light; rules in your specific county or municipality may apply.

Habitat and origin

Native to freshwater lakes, ponds, and slow streams across eastern North America, from the Great Lakes south through the Appalachians and along the Atlantic coast. The species (Lepomis gibbosus) is a small, colorful sunfish with a deep, laterally compressed body marked by blue and orange vermiculations on the cheek and a distinctive orange-red spot on the ear flap. Adults reach 15–25 cm and 100–300 g. Pumpkinseed are found in shallow, weedy water with sand or gravel substrate. They feed on insects, snails, small crustaceans, and some plant material. The flesh is white, mild, and good eating, similar to bluegill. Pumpkinseed have been widely introduced outside their native range, particularly in Europe, where they're established in many countries and considered invasive in some.

Climate and outdoor ponds

Climate classification

temperate (handles seasonal swings)

Outdoor pond zones (USDA)

3 to 9 (winter low around -40°C or warmer)

Heating in a temperate climate

Not required (handles seasonal cool periods)

Cooling in a temperate climate

Not required

Zone bounds reflect year-round outdoor pond viability with no active heating. Anywhere outside the bounded zone, the species can still be kept in an indoor heated tank or a seasonally-managed system. Verify your specific microclimate, as a sheltered yard zone can run a half-zone warmer than the regional rating.

Care notes

A small panfish option for temperate aquaponics, similar to bluegill but with slightly slower growth and smaller maximum size. Optimal temperature is 20–25°C, with tolerance from 4–30°C. Growth: 100–200 g in 12-18 months on commercial sunfish pellet (32-36% protein). FCR is approximately 2.0-3.0, less efficient than bluegill or hybrid sunfish. Stocking density: 10-15 g/L. The main advantage of pumpkinseed over bluegill is geographic availability: in the northeastern US, eastern Canada, and parts of Europe (where the species has been introduced), pumpkinseed are more commonly available from local hatcheries, bait suppliers, and natural water bodies than bluegill. They're also one of the most colorful native sunfish, with blue and orange cheek markings that make them visually interesting in transparent-sided tanks. The species is extremely hardy and disease-resistant, tolerating a wide range of water conditions (pH 6.0-8.5, DO above 3 mg/L, moderate ammonia). Fingerlings are available from state hatcheries and bait shops across the eastern US and Canada. Legal in most states within the native range without special permits. The small harvest size (most fish are under 200 g) limits commercial viability; pumpkinseed are best suited for personal consumption in family-scale aquaponics. For operators wanting slightly larger individual fish, hybrid sunfish or bluegill are better choices.

Further reading

• Aquaponics water chemistry: balancing pH for fish and plants
• Fish for aquaponics: tilapia vs everything else