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Description
Geophagus Rio Negro 4cmGeophagus Rio Negro 4cm Overview: The Geophagus Rio Negro is a stunning freshwater fish known for its graceful sand sifting behavior and vibrant colors. A standout in any aquarium, this species adds a touch of the Amazon with its peaceful demeanor and beautiful appearance. Origin: Native to the Rio Negro basin in South America, the Geophagus Rio Negro thrives in environments that mimic their natural habitatsoft, acidic water with a sandy bottom. They
Geophagus Rio Negro 4cmOverview: The Geophagus Rio Negro is a stunning freshwater fish known for its graceful sand-sifting behavior and vibrant colors. A standout in any aquarium, this species adds a touch of the Amazon with its peaceful demeanor and beautiful appearance.
Origin: Native to the Rio Negro basin in South America, the Geophagus Rio Negro thrives in environments that mimic their natural habitat—soft, acidic water with a sandy bottom. They are part of the Eartheater cichlid family, renowned for their unique feeding habits.
Feeding: This species is omnivorous with a preference for a diet that includes a mix of high-quality flake food, pellets, and live or frozen treats such as brine shrimp and bloodworms. Their sand-sifting behavior means they will also consume small organisms found in the substrate, providing them with a natural and varied diet.
Tank Mates: The Geophagus Rio Negro is best kept with other peaceful fish of similar size. Suitable tank mates include larger tetras, peaceful cichlids, and catfish. Avoid aggressive species that may intimidate or harm these gentle giants.
Aggression: This species is known for its peaceful nature and is rarely aggressive towards other fish. However, males can show territorial behavior during breeding. Providing ample space and hiding spots can minimize aggression.
Experience Level: Suitable for intermediate to advanced aquarists, the Geophagus Rio Negro requires a bit of experience due to its specific water parameter needs and diet. Knowledge of maintaining a balanced and stable aquarium environment is essential.
Water Parameters:
- Temperature: 77-84°F (25-29°C)
- pH: 5.5-7.0
- Hardness: Soft to moderately hard
- It's crucial to maintain clean and well-oxygenated water, performing regular water changes to ensure their health and happiness.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.8 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 5
Fun for dogs
Color: Green/Alligator, Size: Small
Smaller than I expected, but the two little dogs love it!
They love shaking it, making it squeak, tugging it against each other & chasing it when I throw it to fetch. They often sleep laying on it.
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Reviewed in the United States on May 25, 2026
★★★★★ 3
WEIRD feature - requires a water bottle
Color: Cow, Size: Large
Cute, but buyer beware. Maybe the description said this, but who would think to read for this.... You have to insert an empty bottle (like an old water bottle) for it to make the crinkle noise. There is a velcro spot at the base where you can open it and insert the water bottle for the noise factor and your dogs entertainment. I've yet to do that, but feel like my dog is gonna figure out the velcro and get the bottle out in no time. Seems like a waste of money. I could just give her an empty water bottle without the toy for free.
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Reviewed in the United States on June 9, 2026
★★★★★ 5
Best dog toy!
Color: Multicolor/Alligator & Wild Duck, Size: Medium, Color: Multicolor/Alligator & Wild Duck, Size: Medium
Best dog toy! Most dog toys lady maybe a week or less but this one has been going strong for almost 2 months. Both the squeekers still work on both toys i purchased. My vizsla loves ti squeek and carry it around. We added an empty water bottle in the pocket cavity for some extra fun! Yes, we are still on the same water bottle! Fantastic durability.
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Reviewed in the United States on May 26, 2026
★★★★★ 3
Shows wear quickly
Color: Multicolor/Sheep & Cow, Size: Medium
These are cute but not holding up as well as I had hoped. Quality is ok and the Velcro has held up great. The fabric just isn’t as good as it could be. They are much larger than expected.
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Super Sturdy with hours of fun.
Color: Wild Duck, Hare, Squirrel & Alligator, Size: Small
I got the small ones that you cannot put a water bottle in.
These toys have held up way better than expected. I am dog sitting a very rough with toys dog named Chunk. He tears up ever. Single. Toy my dog (Ted) has.
I bought new ones just for chunk. These appealed to me with the no stuffing, They were cheaper, and have a squeaker. Everything chunk needed. They arrived on time and I thought I wasted my money. They were super soft, like too soft. They felt flimsy and weak. Like 5 minutes with chunk and they be dead. 2 hours with my dog and they would have a rip. So far 2 of them (I set two out) have lasted the whole weekend. The bunny looks very rough and disgusting, but no rips, the squeakers still work, and no random fluff everywhere. I am going to wash the bunny once chunk leaves.
My very careful doggo Ted loves them too. He throws them up in the air and catches them, plays tug of war with them, and no rips. They are super sturdy. He can’t wait until Chunk leaves (chunk is 2 and Ted is 12-13) so he can play with them.
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Reviewed in the United States on April 26, 2026