Annual (Year 2+)
Monthly Average
Lifetime (5 yrs)
Emergency Fund /yr
UK (GBP)
First year: £2,554 GBP
Lifetime: £6,322 GBP
Germany (EUR)
First year: €2,360 EUR
Lifetime: €5,841 EUR
Detailed Cost Breakdown
All amounts are in US Dollars (USD). Costs for UK (GBP) and Germany (EUR) are shown further below.
One-Time Setup Costs
$1,411
| Item | Cost | Frequency |
|---|---|---|
| Tank | $360 | One-time |
| Lighting | $216 | One-time |
| Stand | $180 | One-time |
| Sump Refugium | $108 | One-time |
| Protein Skimmer | $108 | One-time |
| Filter | $86 | One-time |
| RO/DI Unit | $86 | One-time |
| Quarantine Tank | $72 | One-time |
| Live Rock | $58 | One-time |
| Fish Purchase | $36 | One-time |
| Heater | $36 | One-time |
| Refractometer Test Kit | $36 | One-time |
| Live Sand | $29 | One-time |
Monthly Recurring Costs
$114/mo
| Item | Cost | Frequency |
|---|---|---|
| Electricity | $22/mo | Monthly |
| Salt Mix | $18/mo | Monthly |
| Food | $14/mo | Monthly |
| Medication | $14/mo | Monthly |
| Water | $6/mo | Monthly |
Annual Recurring Costs
$1,365/yr
| Item | Cost | Frequency |
|---|---|---|
| Fish Vet | $432/yr | Annual |
| Replacement Equipment | $43/yr | Annual |
Pet Insurance (US, USD)
Monthly premium: $0–$0
Coverage: not_available
Deductible:
Already Have the Setup?
If you already have the enclosure, tank, or housing setup, adding a 2nd animal only costs the recurring expenses (food, healthcare, supplies) — no need to buy setup items again.
US (USD) /yr
UK (GBP) /yr
Germany (EUR) /yr
Where Does the Money Go?
Acquisition
$36
Initial Setup
$1,339
Food & Nutrition
$173/yr
Healthcare
$605/yr
Supplies
$252/yr
Maintenance
$372/yr
At a Glance
Size Class
Toy
Weight
20 g
Lifespan
5 years
Activity
Low
Temperament
Peaceful, bottom-dwelling, perching
Sociality
Solitary
Beginner?
Yes
Time Needed
Low
Housing Requirements
Housing Type
House with yard
Indoor/Outdoor
Indoor only
Minimum Space
Marine aquarium
Setup Cost
Medium
Complexity
Medium
Rental Suitable?
With caveats
Diet & Feeding
Diet Type
Omnivore
Feeding Frequency
Daily
Food Type
marine pellets + algae
Supplements
No
Health & Veterinary Care
Common Health Conditions
- Marine velvet
- Ich
- Bacterial infections
Breed-Specific Risks
- None specific
Vaccinations
No (None)
Vet Frequency
As needed
Health Risk
Low
Vet Cost Level
Medium
Emergency Risk
Low
Specialist Vet?
Yes
How Does It Compare?
Frequently Asked Questions
How much does a Blenny cost per year?
Annual recurring costs from year 2 onwards are approximately $1,365 USD (US), with a first-year setup cost of $2,776 USD. Monthly average: $114 USD/mo.
What is the lifetime cost of a Blenny?
Over a typical 5-year lifespan, expect to spend approximately $6,872 USD. This includes initial setup plus ongoing food, healthcare, supplies, and insurance. Real-world spending varies — many owners spend 20-30% less by doing grooming at home, skipping boarding, or choosing not to insure.
Is a Blenny good for beginners?
Yes — Peaceful, bottom-dwelling, perching. Low time commitment required.
What does a Blenny eat?
Omnivore diet, fed Daily. marine pellets + algae
How big does a Blenny get?
Toy size class, typical weight 20 g. Lifespan: 5 years.
Related Calculators & Resources
Photo: Wikimedia Commons — CC BY-SA 4.0 via Wikimedia Commons