GuideMyTank
PisciDexCare GuidesCompatibilityLearning CenterProductsAquarium Builder

© 2026 GuideMyTank

AboutEditorial PolicyContactPrivacy PolicyTerms of ServiceAffiliate DisclosureDisclaimerAdmin Portal

Freshwater Species Library

Aquarium Care Guides

Find practical freshwater fish profiles covering tank size, water parameters, temperament, diet, group size, and compatible tank mates.

Filter Care Guides

Clear Filters

Fish Care Guide Rolodex

Showing 5 of 5 published guides

plecos-eating

Bristlenose Pleco Care Guide

Ancistrus cirrhosus

The Bristlenose Pleco (Ancistrus spp.), also known as the Bushynose Pleco or Bristlenose Catfish, is a peaceful freshwater catfish recognized by the distinctive bristles that develop around its snout. Smaller than many other plecos, they are popular community fish that spend much of their time grazing on surfaces and sheltering among driftwood, rocks, and caves. Bristlenose Plecos come in numerous species and aquarium-bred varieties, including Albino, Super Red, Calico, Longfin, and Black-Eyed Yellow forms. More specialized varieties include fish identified by L-numbers, such as the sought-after L183 Starlight Bristlenose (Ancistrus dolichopterus), along with L181, L182, and L184 Ancistrus. L-numbers are identification codes used in the aquarium hobby for loricariid catfish, particularly when a fish entered the trade before receiving a confirmed scientific name. An L-number therefore identifies a particular form or species and isn't simply a color or pattern designation.

Care
Easy
Tank
20+ gal
Nature
Peaceful
Male-Danio

Celestial Pearl Danio Care Guide

Danio margaritatus

The Celestial Pearl Danio (Danio margaritatus) is a small, colorful freshwater fish known for its pearl-like spots, vivid red-orange fins, and peaceful nature. Native to shallow, heavily vegetated waters in Myanmar, these active nano fish thrive in planted aquariums and do best when kept in groups. Their striking appearance and manageable care requirements make them a popular choice for both beginner and experienced aquarists.

Care
Intermediate
Tank
10+ gal
Nature
Peaceful
guppy

Guppy Care Guide

Poecilia reticulata

The Common Guppy (Poecilia reticulata) is a small, colorful freshwater fish known for its bright colors, active personality, and ease of care. Native to northeastern South America and parts of the Caribbean, guppies are highly adaptable and have become one of the most popular aquarium fish worldwide. They are peaceful, social livebearers that thrive in groups and work well in many community aquariums. Their hardiness and relatively simple care requirements make them an excellent choice for beginner aquarists.

Care
Easy
Tank
10+ gal
Nature
Peaceful
Amano-shrimp

Amano Shrimp Care Guide

Caridina multidentata

Amano Shrimp are peaceful freshwater shrimp known for their excellent algae-eating ability and active scavenging behavior. Originally from Japan and other parts of East Asia, they are a popular choice for planted and community aquariums because they help clean algae, leftover food, and other organic material from the tank. Amano Shrimp are hardy once established, but they do best in stable, well-maintained water with plenty of plants, hiding places, and surfaces to graze on. Their peaceful nature makes them suitable for many community tanks, provided they are not housed with large or aggressive fish that may see them as food.

Care
Easy
Tank
10+ gal
Nature
Peaceful
Blue and red Betta splendens swimming in a spacious planted aquarium

Betta Splendens Care Guide

Betta splendens

A practical, evidence-informed guide to housing, feeding, behavior, tank mates, health, and long-term care for Betta splendens.

Care
Easy
Tank
5+ gal
Nature
Semi-Aggressive