Ultimate FISH Room Tour with more than 60 Species

Welcome back to the channel!In this video, I take you on a full fish room tour — but not a typical one. Instead of showing tanks as they are today, I tell the stories behind my four favorite aquatic projects of 2025. These are ecosystems that grew, struggled, collapsed, recovered, and evolved over hundreds of days, driven by biology, time, and natural balance rather than heavy technology.

???? Products i used here and in other projects (Amazon affiliate links):
• vidaXL Aquarium Stand – Modern white cabinet with lots of storage space and a sturdy top plate for your aquarium setup: https://geni.us/BRPfUJb
• Kärcher WD 3 P V-19/4/20 Wet & Dry Vacuum – Compact, powerful 1000 W cleaning solution with integrated socket for power tools: https://geni.us/XBNSR
• AquaForte Landscaping Foam (500 ml) – Expanding black pond foam perfect for rock and driftwood structures in aquascapes: https://geni.us/YaAjp
• Play Sand 25 kg Fine Quartz – Washed, germ-free decorative sand ideal for natural-looking substrates: https://geni.us/pMv1h
• Floragard Pond & Aquatic Plant Soil 20 L – Nutrient-rich base soil for aquatic plants, lilies, and marginal species: https://geni.us/f3GM
• EHEIM Experience 150 External Filter – Reliable, energy-efficient filtration system for crystal-clear water: https://geni.us/4oI9cuy
• JBL ProScan Water Test Kit – Fast smartphone-based freshwater analysis for easy monitoring: https://geni.us/MAp62st
• Aquarium Münster Orca Underwater Glue 75g, black: https://geni.us/Rc9ST

In the video, you’ll see a 420-day tropical river aquarium develop from bare substrate into a layered, self-regulating ecosystem filled with plants, fish, shrimp, snails, and predators. From explosive plant growth and algae blooms to crayfish, guppy population control, heatwave losses, and recovery through natural regulation, this tank shows how fragile and resilient ecosystems can be at the same time.

We also shrink the Danube River into a single glass jar paludarium. Collected directly from nature, this tiny world contains copepods, planarian worms, mayfly nymphs, freshwater limpets, moss, plants, and rubber ducky isopods — all interacting in a balanced micro-ecosystem. It’s a reminder that even the smallest containers can hold entire worlds when given patience and restraint.

In addition, you’ll get a look at multiple long-running ecosystem jars, a thriving Neocaridina shrimp colony, and the Amazon-inspired tank that nearly failed. Algae outbreaks, fish losses, mystery fry, and one “dangerous” decision changed everything — turning a collapsing system into one of the healthiest tanks in the room.

Finally, we return to the Neckar Bowl insect ecosystem, where dragonfly larvae, snails, and microorganisms reveal how predator–prey relationships and nutrient cycles work even in the smallest aquatic environments.
This video is about real ecosystems, not perfection. No CO₂ systems. No bottled shortcuts. Just observation, patience, and learning when not to interfere.

If you enjoy natural aquariums, ecosystem bowls, predator–prey interactions, aquascaping, and slow, story-driven aquarium content, consider subscribing and let me know which project was your favorite in the comments.
Support the channel by joining the Tetra Gang or the Guppy Gang for exclusive perks, early access, and members-only content.

Thanks for watching — and enjoy the journey inside these glass ecosystems.

Chapters:
0:00 Introduction
0:29 100 Species Ecosystem Tank
6:19 Danube Isopod Jararium
14:32 South America Tank
18:32 Neckar Water Insect Bowl
22:52 Become A Channel Member

Music used:

Atlantis von Audionautix unterliegt der Lizenz Creative-Commons-Lizenz "Namensnennung 4.0". https://creativecommons.org/licenses/by/4.0/