Photo any DOA in the sealed bag on the day of delivery. Approved claims are resolved with store credit, refund, or replacement at Razz Aquatics' discretion. See policy →
Quarantined livestock • Professionally packed • Insulated with weather protection
100+ AquariumsQuarantined Before ShippingFamily-Owned
Care Level
Intermediate
Temperature
68–75°F
pH Range
6.0–7.5
Min. Tank
20 gallons with a 30-inch footprint or larger
Blue Tail Hillstream LoachFrom $29.99
Species Profile
Blue Tail Hillstream Loach
Gastromyzon sp.
Why We Love This Fish
Verified shrimp-safe species
Quarantined before shipping
Stunning in planted tanks
Peaceful community fish
Blue Tail Hillstream Loach is a trade name used for a distinctive Gastromyzon species with muted brown-gray patterning, pale speckling, and blue fin highlights.
Exact species-level identification has not been assigned to this stock; care is based on appropriate Gastromyzon hillstream requirements.
Care Notes
Keep Blue Tail Hillstream Loaches in a mature, cool, well-oxygenated aquarium with strong directed flow.
Provide smooth rockwork and established grazing surfaces with biofilm and algae; a newly set-up aquarium is not appropriate.
Choose peaceful tankmates that will not outcompete them for food or rockwork.
Aggressive bottom dwellers or territorial rock-dwelling fish
Tankmates that heavily outcompete them for grazing surfaces and food
Expert Advice
Razz Aquatics Recommendation
We recommend a mature 20-gallon or larger high-flow aquarium with a 30-inch footprint, smooth rockwork, established grazing surfaces, and a small compatible group. Maintain clean, oxygen-rich water and avoid warm, still setups.
Fish ship via Overnight service to minimize stress and maximize live arrival success. Livestock ships Monday through Wednesday. Choose your preferred delivery date at checkout.
1
Choose Delivery Date
Select your preferred delivery date at checkout. Livestock delivers Wednesday through Thursday.
2
Quarantined & Health Checked
Every animal is imported, quarantined on-site, and health-checked before it ships.
3
Packed for the Weather
Insulated box with heat or cold pack matched to your local weather forecast.
4
Live Arrival Guaranteed
100% Live Arrival Guarantee on every order. Photo any DOA in the sealed bag on the day of delivery and submit a claim through the Start a Claim page. Approved claims are resolved with store credit, refund, or replacement at Razz Aquatics' discretion.See policy →
Fish orders require Overnight. Free Overnight at $200+. Shrimp & livestock: Free 2-Day at $120+.
Why Order From Razz Aquatics
Quarantined Before Every Shipment
Every animal we sell is imported from trusted suppliers, quarantined in our dedicated facility, and health-checked before it ships. We run over 100 aquariums on-site — each focused on a specific species or color morph.
This is a family-owned operation. We pack every order ourselves and stand behind it with a 100% Live Arrival Guarantee. No drop-shipping. No middlemen.
100+
Dedicated quarantine & holding aquariums on-site
48+
States served with live livestock delivery
4.9★
Average customer rating across all verified reviews
100%
Live Arrival Guarantee — backed without fine print
Quarantined Before ShippingFamily-Owned & Operated
Common Questions
Blue Tail Hillstream Loach FAQ
What aquarium does a Blue Tail Hillstream Loach need?+
Use a mature high-flow aquarium with cool, clean, highly oxygenated water, smooth rockwork, and established grazing surfaces.
How many Blue Tail Hillstream Loaches should I keep?+
A small compatible group is preferred. Plan for at least three fish when space and grazing resources allow.
Are Blue Tail Hillstream Loaches beginner fish?+
They are best for a prepared keeper with a mature aquarium, strong flow, and reliable oxygenation.
What is the scientific name of the Blue Tail Hillstream Loach?+
This stock is identified conservatively as Gastromyzon sp. The trade name refers to its blue fin highlights; an exact species-level identification has not been assigned.
What do Blue Tail Hillstream Loaches eat?+
They graze on biofilm and algae, supplemented with spirulina-based foods, quality sinking foods, and vegetable-forward offerings.
Live plants give nano fish cover, reduce stress, and create a more natural aquarium. They help break up sightlines, provide shelter for shy fish, and support a healthier planted tank.
Shrimp Safe
Shrimp Safe
Shrimp Safe
Shrimp Safe
Shrimp Safe
