Random Aquarium Topics

How to Select Compatible Freshwater Fish for Aquariums

Freshwater Topics - General

HydraFor peace and harmony to prevail inside your aquarium tank, make sure you put in fish species that are compatible. Like other animals, some species of fish are more aggressive and predatory, while some possess a naturally calm temperament. If you are in the process of selecting compatible fish species for your community tank, here are some tips to help you:

Know the Basic Categories of Tropical fish

The basis of these categories is their ability to get along well with other fish in the tank.

Mantis Shrimps and Pistol Shrimps

Marine Topics - Marine Pests
Mantis Shrimp (Odontodactylus spp.) Like its terrestrial neighbour, The Mantis Shrimp (Odontodactylus spp.) is a dangerous and cunning predator. It secretes itself in holes within living rock and more often than not finds its way into the aquarium via that same route. Indeed, some consignments of living rock can be so dense with them that one can be found in almost every hole. The adult size of this shrimp can vary widely within a range 2-12" (5-30cm), depending on species.
Whilst hovering at the entrance to its resident hole, the mantis shrimp can flash out club-like appendages at anything considered edible passing within range. Fish, crustaceans, molluscs, aquarist's fingers(!), all can fall foul of this voracious hunter.

Looking For Healthy Livestock

Marine Topics - FAQs
Choosing Livestock Q) What points should I bear in mind when looking for healthy livestock?
R. Messina, Florence, Italy.

A) Apart from a bargain, everyone is looking for livestock in the peak of health. By purchasing strong and vibrant animals, the marinist gains a distinct advantage in that his/her charges will already be ready to survive the rigours of aquarium acclimatisation and come out the other end full of vitality and stress-free. But do most enthusiasts know what to look for in a good specimen? How can we tell the good from the bad - even though they may be ugly!?

Mantis Shrimp - Thumb Splitters

Marine Invertebrates - Shrimps
Mantis Shrimp In the sea a number of animals have earned the reputation of being harmful. Indeed, some denizens, such as sharks, stingrays, scorpionfish, sea snakes, and some jellyfish, can be potentially dangerous to swimmers or divers. In order to survive and reproduce, many sea creatures have evolved protective mechanisms against other predators. Some inject venom through biting or stinging, while others deliver electric shocks. Normally, the potential danger to man is minimal, but even small creatures can inflict severe wounds if mistreated. I learned this painful lesson one summer during a collecting dive in the Coral Sea.

Big Fish for The Marine Aquarium!

Clown Trigger Fish (Balistoides conspicillum) One type of marine aquarium never fails to create a stir, the fish-only tank containing BIG fish! The sight of large slices of brightly coloured piscine flesh cruising around an equally spacious aquarium is enough to make anyone's heart beat a little quicker.


The Micro Shrimp Tank

Blood Shrimp (Lysmata debelius) Most of my regular readers will already be aware that, on the whole, I do not condone small marine tanks; that is, tanks with a nett volume of less than 20 gallons (91 litres). They are usually very unstable as far as water parameters are concerned and subsequently exert...


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