What an oscar really costs

A juvenile oscar costs only $7–$15, but it grows to a foot long and needs a 75-gallon tank, so a typical setup with stand, canister filter and heater runs about $900 before the fish goes in. After that, expect around $435 a year, half of it electricity to heat 75 gallons, plus large pellets, filter media and heater replacements.

Life expectancy: 10–15 years
Size: Usually 10–12 in as an adult (PetSmart says up to 18 in); sold at 2–3 in
Care level: Moderate
Price: $7–$15
Setup: About $920
Insurance: Not offered

Estimate for: One oscar (tiger, red or albino) kept on its own in a 75-gallon tank on a stand, with a canister filter and heater. Space needed: A 4-foot, 75-gallon tank (48 x 18 in) for one oscar; two need 90–100+ gallons.

Where the money goes each year

A typical year for an oscar, with typical spending in an average-cost area.

Electricity for heater and canister filter$217
Large cichlid pellets (plus supplement)$90
Canister filter pads and carbon$37
Illness and injury (average)$29
Replacement heater$28
Water conditioner refill$22
Test strips or reagent top-up$13
Typical year$440

Most years land between $260 and $670. Items replaced on a cycle are spread across the years.

Setup and the first year

For oscars, the equipment usually costs far more than the animal.

Getting set up

Price (pet store or local fish store, one juvenile)$11
75-gallon aquarium with stand, canopy and LED$500
Canister filter (Fluval 407 class)$257
300 W aquarium heater$55
Gravel$48
Water conditioner (first bottle)$11
Water test kit$36
Gravel vacuum and net$11
Upfront$930

Running costs in year one

Large cichlid pellets (plus supplement)$90
Water conditioner refill$22
Canister filter pads and carbon$37
Test strips or reagent top-up$13
Replacement heater$28
Electricity for heater and canister filter$217
Illness and injury (average)$29
Year-one running costs$440

First-year total: $1,360.

Make it your estimate

Change the choices that move the price most. Totals update as you go.

Your lifetime estimate$6,600 First year $1,360Then about $440 a yearOver 13 years

$36 a month in a typical year.

Electricity for heater and canister filter$217
Large cichlid pellets (plus supplement)$90
Canister filter pads and carbon$37
Illness and injury (average)$29
Replacement heater$28
Water conditioner refill$22
Test strips or reagent top-up$13
Typical year$440

What to buy

The gear and supplies in this estimate, matched to an oscar. Each link searches Amazon for the right type and size.

75-gallon aquarium with stand, canopy and LEDSetup, typically about $500
See on Amazon
Canister filter (Fluval 407 class)Setup, typically about $257
See on Amazon
300 W aquarium heaterSetup, typically about $55
See on Amazon
GravelSetup, typically about $48
See on Amazon
Water conditioner (first bottle)Setup, typically about $11
See on Amazon
Water test kitSetup, typically about $36
See on Amazon
Gravel vacuum and netSetup, typically about $11
See on Amazon
Large cichlid pellets (plus supplement)Ongoing, typically about $90 a year
See on Amazon
Canister filter pads and carbonOngoing, typically about $37 a year
See on Amazon

As an Amazon Associate, PetPriceTag earns from qualifying purchases. Buying through these links costs you nothing extra and never changes our cost figures.

Health costs to plan for

Condition	What it is	Typical treatment	Cost
Hole-in-the-head (head and lateral line erosion)	Pitting on the head and along the lateral line; a vet-written guide says oscars and discus make up the largest share of cases, linked to poor filtration, dirty water, poor diet and Hexamita. Usually not fatal but can scar permanently. Source	Better filtration and diet; metronidazole in food for 5 days (Seachem MetroPlex 5 g, $8.14); in-clinic fish vet $50–$100	$8–$108
Ich (white spot disease)	A protozoan parasite usually brought in with new fish or feeder fish; white spots, flashing and rapid breathing. Source	API Super Ick Cure 16 oz ($21.19) and a slow temperature rise; vets confirm by skin scraping, about $50–$100 in clinic	$21–$121

The yearly estimate includes an average of $29 for illness and injury. Mainstream U.S. pet insurers do not cover aquarium or pond fish. Nationwide's avian and exotic plan, the main exotic policy, covers birds, rabbits, reptiles, small mammals and a few others, and fish are not among the named species, so budget for medications and the rare fish-vet visit yourself.

What drives the cost

Buy the tank for the adult, not the 2-inch juvenile. Aquarium Co-op prefers 75 gallons for one oscar (many keepers call 55 the minimum) and 90–100 gallons for two; PetSmart's own listing says 125 gallons and up to 18 inches.
The tank package is the big cost. A 75-gallon ensemble with canopy, stand and LED was $499.99 on sale at PetSmart ($799.99 regular); a bare 75-gallon tank was $269.99 at That Pet Place.
Oscars are messy eaters, so filtration matters. A Fluval 407 canister (383 gph, 23 W) was $256.99, and a vet-written guide notes canister filters are generally more effective than hang-on-backs against hole-in-the-head.
Heating 75 gallons to the 74–80°F Aquarium Co-op recommends is the biggest running cost: about 1,190 kWh a year with the canister, roughly $217 at the July 2026 U.S. average rate.
An adult oscar eats a lot of pellets. We assume six 8.8 oz tubs of large cichlid pellets a year (about $90); Aquarium Co-op also suggests freeze-dried krill or crickets as snacks and a vitamin supplement.

Is it legal where you live?

Oscars are legal to keep throughout the U.S. and sold at national chains; Astronotus is not on the federal injurious-wildlife list. Never release one into the wild.

Cities and counties can have their own rules. Check locally before you buy.

Pet store or local fish store, one juvenile: $7–$15
Lifetime: $6,600

How this estimate is built

Every line, with the typical, thrifty and generous figures and where each comes from.

Item	Typical	Range	Basis and sources
Setup
75-gallon aquarium with stand, canopy and LED	$500	$366–$800	Typical: Marineland High Definition LED Ensemble, 75 gal (48.4 x 18.4 x 21 in tank, glass canopy, stand, LED; no filter or heater), $499.99 on sale at PetSmart; high is its $799.99 regular price. Low: Seapora 75-gal tank only, $269.99 at That Pet Place, plus a TitanEze steel stand for 10–75 gal tanks from $96.29 at PetSmart (the 'from' price may be for a smaller size), with no lid or light. PetSmart: Marineland High Definition LED Ensemble, 75 gallon (tank, glass canopy, stand, LED; $499.99 sale, $799.99 regular); That Pet Place: Seapora 75 gal aquarium, 48 x 18 x 20 in ($269.99, tank only); PetSmart: aquarium stands listing (TitanEze steel 10–75 gal from $96.29, Top Fin Chalked Chestnut 20–75 gal from $159.99)
Canister filter (Fluval 407 class)	$257	$132–$389	Typical: Fluval 407 canister (rated 50–100 gal, 383 gph, 23 W), $256.99 at PetSmart and That Pet Place. Low: AquaClear 110 hang-on-back (rated to 110 gal), $131.99. High: both, for a heavy-feeding oscar. PetSmart: Fluval 407 Performance Canister Filter ($256.99; 50–100 gal, 383 gph, 23 W); Dubia.com: AquaClear Power Filter 110 gal ($131.99); The Vet Desk (Samantha Devine, DVM): Hole in the Head Disease in Fish
300 W aquarium heater	$55	$55–$100	Bulk Reef Supply suggests 3–5 W per gallon (225–375 W for 75 gallons). Aqueon Glass Adjustable 300 W, $54.95 at Chewy. High: two 200 W units ($49.95 each) so one failing doesn't chill or cook the tank. Chewy: Aqueon Glass Adjustable Aquarium Heater (100 W $39.95, 150 W $44.95, 200 W $49.95, 300 W $54.95); Bulk Reef Supply: 5-Minute Aquarium Guide Ep. 12, Heaters (replace every 1–2 years; 3–5 W per gallon)
Gravel	$48	$0–$64	PetSmart's listing suggests natural gravel and large rocks. CaribSea Gemstone Creek Gravel, $15.96 per 20-lb bag at Chewy; three bags typical, four high, bare bottom low. Bag counts are our estimate. Chewy: fish supplies listing (CaribSea Gemstone Creek Gravel 20-lb $15.96); PetSmart: Tiger Oscar Cichlid ($13.99; up to 18 in; 125-gal minimum; 10–15 yr)
Water conditioner (first bottle)	$11	$8–$11	API Stress Coat 16 oz, $10.98 at Chewy (treats up to 940 gallons); low is the 8 oz at $7.69. Chewy: API Stress Coat Aquarium Water Conditioner (sizes, dosing 5 ml per 10 gal)
Water test kit	$36	$13–$36	A vet-written guide recommends a fairly new liquid test kit for ammonia, nitrite and pH. Typical: API Freshwater Master Test Kit (800 tests), $35.98 at Chewy. Low: API 5-in-1 strips, 25 ct, $12.98. Chewy: aquarium test kits (API Freshwater and Saltwater Master Test Kits $35.98, API 5-in-1 strips 25 ct $12.98); The Vet Desk (Samantha Devine, DVM): Hole in the Head Disease in Fish
Gravel vacuum and net	$11	$8–$11	Python Pro-Clean gravel washer $7.99 and a 4-in net $2.99 at Chewy. A longer siphon or a bigger net for a foot-long fish costs more. Chewy: fish supplies listing (Python Pro-Clean gravel washer $7.99, 4-in net $2.99, Stress Coat 16 oz $10.98)
Every year
Large cichlid pellets (plus supplement)	$90	$60–$134	Hikari Cichlid Gold Large Pellets, $14.99 per 8.8 oz at Petco. Typical: six tubs a year for one adult; low four; high eight plus a bottle of Vita-Chem ($13.99 at Aquarium Co-op, which recommends vitamins against hole-in-the-head). Tub counts are our estimate. Petco: Hikari Cichlid Gold Large Pellets, 8.8 oz ($14.99); Aquarium Co-op: Care Guide for Oscar Fish (75 gal for one, 10–12 in, 10–20 yr, oscars $7–$15+)
Water conditioner refill	$22	$11–$38	Assuming 30% weekly water changes for a messy fish (our assumption): about 1,170 gallons a year, or 585 ml at 5 ml per 10 gallons, so a 32 oz Stress Coat ($21.88 at Chewy). Low: 16 oz ($10.98) with smaller changes; high: 64 oz ($37.58). Chewy: API Stress Coat Aquarium Water Conditioner (sizes, dosing 5 ml per 10 gal)
Canister filter pads and carbon	$37	$11–$74	Fluval Quick Clear polishing pads (6-pack for 306/307/406/407), $10.99, and Fluval UltraGrade Carbon, $14.99, at PetSmart. Typical: two pad packs and one carbon a year; low one pad pack; high four packs and two carbon. Amounts are our estimate; the 407's foam and BioMax last much longer with rinsing. PetSmart: filter media listing (Fluval Quick Clear pad 6-pack for 306/307/406/407 $10.99, Fluval UltraGrade Carbon $14.99)
Test strips or reagent top-up	$13	$0–$26	One 25-count pack of API 5-in-1 strips a year ($12.98 at Chewy) alongside the master kit; high two packs. Chewy: aquarium test kits (API Freshwater and Saltwater Master Test Kits $35.98, API 5-in-1 strips 25 ct $12.98)
Replacement heater	$55 every 2 years	$50–$100	Bulk Reef Supply advises replacing heaters every 1–2 years in most cases; modeled every 2 years. Aqueon 300 W $54.95 at Chewy; low a 200 W ($49.95); high two 200 W units. Bulk Reef Supply: 5-Minute Aquarium Guide Ep. 12, Heaters (replace every 1–2 years; 3–5 W per gallon); Chewy: Aqueon Glass Adjustable Aquarium Heater (100 W $39.95, 150 W $44.95, 200 W $49.95, 300 W $54.95)
Electricity for heater and canister filter	$217	$127–$308	Rough estimate. AquariumScience.org figures 'very roughly' 1.5 W per gallon to hold water 10°F above room temperature, so 75 gallons averages ~112.5 W; the Fluval 407 draws 23 W. 135.5 W × 8,760 h = 1,187 kWh × $0.1831/kWh (EIA U.S. residential average, July 2026) = $217.34. Low: 5°F rise = $127.11. High: 15°F rise in a cool room = $307.56. The LED light is not counted. U.S. EIA Electric Power Monthly: average residential price, July 2026 (18.31 cents/kWh); AquariumScience.org: Aquarium electric cost (heater ~1.5 W per gallon for a 10°F rise); PetSmart: Fluval 407 Performance Canister Filter ($256.99; 50–100 gal, 383 gph, 23 W); Aquarium Co-op: Care Guide for Oscar Fish (75 gal for one, 10–12 in, 10–20 yr, oscars $7–$15+)
Illness and injury, per year
Fish medications (and the occasional vet visit)	$29	$0–$129	Most illness is treated at home. Typical: Seachem MetroPlex 5 g ($8.14), the metronidazole food treatment used for hole-in-the-head, plus a 16 oz API Super Ick Cure ($21.19; a 75-gal tank takes 75 ml a dose, twice). High adds one in-clinic fish vet visit ($50–$100, California Fish Vet). Bulk Reef Supply: Seachem MetroPlex (5 g $8.14); Chewy: API Liquid Super Ick Cure (4 oz $6.99, 16 oz $21.19; 5 ml per 5 gal, repeat after 48 h); California Fish Vet (Jessie Sanders, DVM): Is paying a fish veterinarian worth the cost?; The Vet Desk (Samantha Devine, DVM): Hole in the Head Disease in Fish

More pet fish by yearly cost

Betta fish$130 a year
Neon tetras$170 a year
Freshwater community tank$230 a year
Angelfish$290 a year
African cichlids$330 a year
Clownfish$360 a year
Compare all pet fish

Common questions

How much does an oscar cost?

Pet store or local fish store, one juvenile: $7–$15. The bigger costs come after: about $920 to set up, about $1,360 for the whole first year, then about $440 a year.

How much does an oscar cost per year?

About $440 a year ($36 a month) for a typical owner in an average-cost area, ranging from about $260 for a thrifty owner in a lower-cost area to $670 for a generous owner in a big city.

How much does an oscar cost over its lifetime?

About $6,600 over a 13-year life, in 2026 dollars.

Sources

Estimates in 2026 US dollars. Vet prices for this pet use the same region adjustment as the rest of the site (methodology). Updated October 15, 2026. Spot a wrong figure?