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Bloody Mary Hillstream Loach

Bloody Mary Hillstream Loach

Gastromyzon sp. "Bloody Mary"
Pre-orderLive Arrival Guaranteed
Regular price $34.99 USD
Regular price Sale price $34.99 USD
% OFF Sold out

Free Overnight Shipping on Orders $200+

This is a pre-order item. These animals are already on hand at our facility and currently completing quarantine before we ship. Estimated ship window: 2-3 weeks. We only ship animals when weather conditions are safe to make sure they arrive healthy — you'll get an email the moment your order is on its way. Estimated Release Date: 9/16
Note: if your order includes a pre-order item, everything ships together once it's ready.
Pack Size
Quantity
100% Live Arrival Guarantee

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
68–76°F
pH Range
6.5–7.5
Min. Tank
20 gallons
Species Profile

Bloody Mary Hillstream Loach

Gastromyzon sp. "Bloody Mary"

Why We Love This Fish

  • Verified shrimp-safe species
  • Quarantined before shipping
  • Stunning in planted tanks
  • Peaceful community fish

Bloody Mary Hillstream Loaches are specialized stream fish with a flattened body adapted to clinging to rocks in fast-moving water. Their distinctive patterning and constant grazing make them a rewarding choice for an established river-style aquarium.

Care Notes

Keep in a mature, high-oxygen aquarium with smooth rocks, established biofilm, and steady current. Offer algae wafers and quality sinking foods in addition to natural grazing. Avoid warm, stagnant water and rough décor.

Quick Care Facts
Care LevelIntermediate
Temperature68–76°F
pH Range6.5–7.5
Min. Tank20 gallons
DietBiofilm, algae, algae wafers, quality sinking foods
Adult Size~2–3 in
What’s Included
  • Quarantined fish
  • Insulated + weather pack
  • Overnight required
Species Spotlight

Why We Love This Fish

01

Built for Flow

Their body shape is adapted to clean, oxygen-rich moving water.

02

Active Rock Grazer

They spend their day exploring smooth surfaces for biofilm and algae.

03

Mature-Tank Specialist

Best in established aquariums with natural grazing available.

Bloody Mary Hillstream Loach in planted aquarium
Expert Advice
Razz Aquatics Recommendation

Build a mature 20-gallon-plus aquarium with strong filtration, excellent oxygenation, smooth stone, and gentle-to-moderate current. Add them only after the aquarium has developed natural grazing surfaces.

— Tyler, Razz Aquatics  ·  100+ Dedicated Aquariums  ·  Family-Owned & Operated
How It Gets There

Overnight. Every Time.

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
Razz Aquatics facility
Quarantined Before ShippingFamily-Owned & Operated
Common Questions

Bloody Mary Hillstream Loach FAQ

Are they safe with shrimp?+
They are generally safe with adult shrimp; provide dense cover if protecting shrimplets.
Do they need current?+
Yes. Strong oxygenation and steady water movement are essential for long-term care.
Is there a live arrival guarantee?+
Yes. Photograph any DOA in the sealed bag on delivery day and submit a claim through the Start a Claim page.
What do they eat?+
Biofilm and algae are important, supplemented with algae wafers and quality sinking foods.
How are these fish shipped?+
Fish ship via Overnight / Next Day Air in insulated packaging with weather-appropriate heat or cold protection.
How do I acclimate them?+
Float the sealed bag for 15 minutes, then drip-acclimate for 30–60 minutes. Net fish into the aquarium and do not add bag water.