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Orange fancy goldfish with flowing fins and characteristic head growth swimming above pebbles in aquarium

Goldfish Compatibility with Other Fish Species

08.09.2026

Introduction

Goldfish compatibility remains one of the most debated topics among aquarium hobbyists. Many beginners assume these popular fish can coexist with virtually any species, but reality proves far more complex. Goldfish have specific environmental requirements that differ significantly from most tropical fish. In my experience, a species-only setup with various Carassius auratus varieties offers the most reliable approach. However, with careful planning and understanding of goldfish behavior, compatible tankmates can be selected.

Cuckoo catfish with spotted pattern and long barbels on rocky substrate

Cuckoo Catfish: Care Guide for Home Aquariums

06.09.2026

Introduction

The cuckoo catfish is one of the most fascinating members of the featherfin catfish family. This species earned its common name from a remarkable reproductive strategy that mirrors the brood parasitism of cuckoo birds. In the wild, these fish are found exclusively in Lake Tanganyika in East Africa, where they’ve evolved alongside mouthbrooding cichlids.

Large catfish with greenish-yellow scales and prominent vertical stripes on its side, long barbels near mouth, on sandy substrate

Aquarium Catfish: Types, Care and Maintenance Guide

03.09.2026

Introduction

Aquarium catfish are among the most popular inhabitants of home tanks, and for good reason. These bottom-dwelling workers not only help maintain cleanliness by scavenging leftover food and cleaning algae from surfaces, but also delight with their variety of shapes and behaviors. In my experience, properly selected catfish become a true aquarium centerpiece while remaining undemanding pets even for beginner aquarists.

Large dark gray catfish with long barbels and rounded body in aquarium with plants and rocks

Do Aquarium Catfish Eat Fish: Myth or Reality

31.08.2026

Introduction

Many beginner aquarists wonder whether aquarium catfish eat fish in their tanks. The answer isn’t straightforward—it depends on the specific catfish species, tank conditions, and the size of their tankmates. Most popular aquarium catfish are peaceful creatures that coexist well with other inhabitants and serve as cleanup crew, consuming leftover food and algae. However, certain predatory species can attack fish small enough to fit in their mouths.

Spotted catfish resting on rocky aquarium substrate

Breeding Aquarium Catfish: Complete Guide

28.08.2026

Introduction to Catfish Reproduction

Breeding aquarium catfish opens a fascinating window into fish biology and reproductive behavior. Success depends on understanding species-specific requirements and creating optimal conditions. Catfish display remarkable diversity in breeding strategies: some build bubble nests, others deposit eggs in caves, while many attach eggs to plants or aquarium glass.

Light-colored catfish with long barbels foraging at the aquarium bottom among stones

Catfish Food: Complete Feeding Guide

25.08.2026

Understanding Bottom Dweller Nutrition

Catfish are among the most popular aquarium inhabitants, valued for their peaceful temperament and role as tank cleaners. These bottom-dwelling fish spend most of their time near the substrate, rarely venturing to the surface. Many species have downward-facing mouths, making it difficult for them to compete with surface feeders during meal times.

Рыбка петушок с сине-красными плавниками в аквариуме с растениями

Red Black Betta: Care Guide for Your Aquarium

22.08.2026

What Makes Red Black Bettas Special

The red black betta represents one of the most striking color combinations in the Betta splendens family. This selective breeding achievement combines vibrant red hues with deep black accents, creating a dramatic contrast that catches the eye immediately. In my experience, these fish display their best colors in tanks with dark substrate and live plants, where the red-black pattern truly stands out.

Siamese betta fish with spread fins displaying blue and red coloration and iridescent scales

Blue Betta Fish: Care and Tank Setup Guide

19.08.2026

Understanding Blue Betta Fish

Blue betta fish represent one of the most striking color variations of Betta splendens, captivating aquarists with their intense pigmentation and flowing fins. These labyrinth fish have become incredibly popular in the aquarium hobby, combining visual appeal with manageable care requirements. In my experience, a well-maintained blue betta becomes the centerpiece of any aquarium, especially when males display their full finnage.

Healthy betta fish with vibrant blue and red coloration and flowing finnage in aquarium

Betta Fish Diseases: Symptoms, Treatment & Prevention

16.08.2026

Why Bettas Get Sick More Often

Betta fish (Betta splendens) rank among the most popular aquarium species, but their stunning appearance comes with trade-offs. Selectively bred varieties with elaborate fins have weaker immune systems compared to their wild counterparts. These ornamental finnage makes them particularly vulnerable to infections and physical damage, requiring careful attention to water quality and tank maintenance.