Aquarium Knoxville

11/24/2025

Most people know Rummy Nose Tetras for their bright red face, but what almost nobody talks about is that “Rummy Nose Tetra” isn’t one fish at all it’s actually three different species that look nearly identical:
Hemigrammus bleheri, Hemigrammus rhodostomus, and Petitella georgiae.
And here’s the wild part…
Even in the aquarium trade, shipments are often mixed or mislabeled, and the differences are subtle enough that even experienced hobbyists argue about which species they’re really keeping. Some have a longer tail stripe, some have a deeper red head, some come from blackwater, others from clearer habitats but unless you study them carefully, you’d never know you might be keeping an entirely different species than the person next to you.
It explains why people sometimes compare their behavior and colours and get completely different results they may not even have the same species

11/23/2025

Had a really good restock in saltwater and freshwater fish. Come check it out! We will be having a some early Black Friday sales going right now. Tons of aquariums and equipment now 20% - 30% off!

11/23/2025

We will be closed Wen and Thursday for Thanksgiving. Bless all of you. Have a great day. Black Friday sales have started early Today and one final drop will happen Friday. You will not want to miss it. Www.aquariumconnection.com

11/08/2025

Some fish just never lose their magic, no matter how long you’ve been in this hobby… and Cardinal Tetras are exactly that. Every time you see them, they still give the same excitement.
What always stands out is how different they are from Neons once you really look at them. That deep red running all the way through the body and the intense blue line… it brings a completely different energy to a planted tank. When a group of Cardinals moves together through the plants, the whole aquarium just feels alive in a special way. We keep these in stock and healthy. .com
tetra

11/06/2025

Ember Tetras are one of those fish that can completely change the mood of a tank without taking over the whole scene. Their warm glow always adds a soft, calm energy, especially in heavily planted setups. They stay tight and confident when the environment feels safe, it gives the tank a gentle “life in motion” feeling that never gets old. We keep them in stock

11/06/2025

Black Neon Tetras (Hyphessobrycon herbertaxelrodi) come from streams where sunlight barely reaches and the water carries a natural tea tint. Their eye isn’t just “decorative” that reflective upper stripe acts almost like a built in light catcher, helping them read movement and find their school even in dim, tannin rich water.
In bright planted tanks, it turns into a soft shimmer we call beauty… but out there, it’s more like an adaptation built for survival

11/03/2025

https://youtu.be/vtrdy5vqXco

In this video, I take you on a calm, cinematic journey through the full build process. From selecting the wood and shaping the hardscape to planting, filling...

11/01/2025

Spirodela polyrrhiza Easy
NEW Arrival Spirodela polyrrhiza, commonly known as Greater Duckweed, is a versatile floating plant that adds a natural, dynamic element to aquariums. Its small, round, green fronds float freely on the water's surface, creating a serene, pond-like appearance. This plant is ideal for providing shade and shelter for fish, reducing light pe*******on, and helping to control algae growth.

Thriving in low to moderate lighting, Spirodela polyrrhiza is easy to care for and grows rapidly, making it suitable for both beginners and experienced aquarists. Its rapid growth rate enhances nutrient absorption, thereby improving water quality. Regular thinning is recommended to prevent excessive coverage and ensure balanced light distribution to submerged plants.

Key Benefits

Natural Shade: Offers shelter and reduces light for fish.
Algae Control: Competes for nutrients, limiting algae growth.
Water Quality Improvement: Absorbs excess nutrients efficiently.

Spirodela polyrrhiza is an excellent choice for aquarists seeking a low-maintenance, functional plant that enhances the natural aesthetics and health of their aquarium ecosystem.

11/01/2025

New Arrival Sagittaria subulata 'Needle Leaf' Medium
Sagittaria sp. 'Needle' is a stunning, narrow-leaved aquatic plant, likely a variation of Sagittaria subulata. With slender leaves measuring 15–30 cm and only a few millimeters wide, this plant adds a delicate, elegant touch to any freshwater aquarium.��Ideal for aquascaping, Sagittaria 'Needle' is easy to grow and thrives in moderate light without additional CO2. Under intense lighting, its vibrant green foliage may develop subtle orange hues, enhancing its visual appeal. This hardy plant spreads effortlessly via runners, making propagation simple—trim and replant as needed.��Thanks to its compact, upright growth, Sagittaria 'Needle' is a fantastic choice for creating a soft, natural-looking background in aquariums. Whether you're a beginner or an experienced aquascaper, this low-maintenance plant is an excellent addition to any aquatic setup.

10/31/2025

New Arrival Rotala rotundifolia ‘Blood Red’ Medium
Blood Red' is the most intensely red-colored variation of Rotala rotundifolia. Placing it next to light green plants will enhance its vibrant red color. This plant is easy to grow and can thrive in relatively low light and nutrient conditions. However, to achieve the most intense coloration, plenty of light and added CO2 are necessary. The plant grows erect to slightly arching, producing many branches. Regular trimming is needed to ensure good light pe*******on and water flow among the stems.

10/29/2025

Cherry barbs have always been one of those fish that just feel right in a planted tank. They don’t ask for much, stay calm, and look their best when swimming through thick green plants. Nothing flashy, just simple and beautiful, exactly how a good aquarium should feel. 🐟🌿