Freshwater Freaks species guide

Severum Care Guide

Heros spp.; domestic color forms · Large South American cichlid

Severums are substantial, intelligent cichlids sold in several domestic color forms, including red-spotted and red-tiger lines. Their rounded juvenile appearance can hide the adult space, waste, plant-damage, and territorial commitments.

Stylized illustration of Severum
Adult size8–10 in
Adult aquarium75+ gal; larger for companions
Temperature75–84°F
TemperamentSemi-aggressive; pair-territorial
ExperienceIntermediate
Social needSingle, compatible pair, or planned large-cichlid community

A good match when

Your aquarium meets the adult commitment

Severums are substantial, intelligent cichlids sold in several domestic color forms, including red-spotted and red-tiger lines. Their rounded juvenile appearance can hide the adult space, waste, plant-damage, and territorial commitments.

Temperature
75–84°F
pH guidance
6.0–7.8; stable
Social structure
Single, compatible pair, or planned large-cichlid community

The adult home

Build around behavior, not just gallons

  • Use a broad aquarium with strong filtration, open turning room, and sturdy structures that divide territories.
  • Secure décor on the aquarium base and expect adults to dig, move objects, or eat soft plants.
  • Plan from the start for an eight-to-ten-inch adult rather than a small store juvenile.

Water stability comes first

A listed range is not a target to chase with quick chemical adjustments. Match your source or breeder water gradually, understand GH and KH, use a reliable test kit, and prioritize consistent clean water.

Compatibility and nutrition

Make sure every fish can behave and eat normally

  • Choose robust fish too large to swallow and calm enough not to provoke constant conflict.
  • Do not combine severums with tiny community fish, highly aggressive cichlids, or slow fish that cannot compete for food.
  • Use a complete medium-to-large cichlid pellet with varied vegetable matter and frozen foods; avoid feeder fish.

Compatibility lists are never guarantees. Observe the actual animals, provide visual barriers, and keep a safe alternate housing plan whenever territorial or predatory fish are involved.

Arrival and long-term care

Observe first; change conditions deliberately

  1. Before arrival, cycle and test the aquarium, confirm temperature, and prepare a lid and species-appropriate cover.
  2. On arrival, dim the lights, inspect the unopened bag, and follow the seller’s acclimation directions. Do not pour shipping water into the aquarium.
  3. For the first week, keep the environment quiet, feed lightly after the fish settles, and record appetite, breathing, waste, and social behavior.
  • Monitor feeding access, pair formation, lip or fin injuries, and fish being driven into corners.
  • Maintain strong oxygenation and regular water changes for the heavy adult bioload.
  • Keep a divider or alternate cycled aquarium available before social dynamics change.

When to seek experienced help

Test temperature, ammonia, nitrite, nitrate, and pH first. Seek an aquatic veterinarian or experienced fish-health professional for persistent breathing distress, loss of balance, rapid swelling, ulcers, severe injury, abnormal waste with ongoing weight loss, or sustained refusal to eat. Avoid medicating blindly.

Breeding overview

Breeding creates a responsibility for the offspring

Compatible pairs clean a rock or other firm surface and guard eggs and fry. Territorial behavior can intensify sharply during spawning, so separation capacity and grow-out space should be ready first.

Before attempting a spawn, prepare cycled grow-out space, suitable first foods, a separation plan, and responsible homes for juveniles. Do not rely on a community aquarium to provide safe or controlled breeding conditions.

Quick answers

Severum FAQ

Is this fish suitable for a beginner?

Intermediate is our practical experience rating. A fully cycled aquarium, correct adult space, and compatible water are required at every level.

Can it live in a community aquarium?

Semi-aggressive; pair-territorial. Compatibility depends on adult size, individual behavior, group structure, aquarium footprint, and whether every species shares compatible water requirements.

Is the minimum aquarium a stocking recommendation?

No. It is a responsible adult starting point for the species under an appropriate setup. Additional fish, territories, or mixed species can require substantially more room.

Editorial approach and sources

This educational guide uses conservative adult-care recommendations synthesized from established aquarium husbandry practice, taxonomic references, veterinary-reviewed fish-care material, and species biology. Aquarium size is a responsible starting point rather than a stocking guarantee. Last reviewed August 2, 2026.