Senegal Bichir (Polypterus senegalis)
Reason:
One of the main stars to be seeded, the bichirs would rise to strange lineages! Some of the reasons they were chosen is due to their archaic nature, resembling archaic lobe-finned fishes. The mysterious beings that left them took note, introducing these bichirs in hopes to achieve a replication of the tetrapods. However they would take a similiar but rather weird route.
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Silver Arowana (Osteoglossum bicirrhosum)
Reason:
The surface of the planet needed a little life, something slender and beuatiful. Mystical and dragon like, what other fish the beings would pick but the Silver Arowana! Their bony-tongues and leaping behavior intrigued them, so they were seeded to see what will happen with thise strange features.
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Sailfin Molly (Poecillia latipinna)
Reason:
The oceans and seas needed a base of the food chain, a small yet hardy and fast breeding fish. Out of the many fish species, the Sailfin Molly intrigued the beings greatly. With livebearing capabilities, and fast breeding rates. The waters will be filled in no time! So in mass these fishes were seeded.
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Convict Cichlid (Amatitlania nigrofasciata)
Reason:
One of the most adaptable clades were the cichlids, with their aggressive parental care and double jaws. However the most aggressive and fertile are the convict cichlids. Due to these reasons, the convict cichlids were chosen as well.
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Ganges River Dolphin (Platinista gangetica)
Reason:
It's a bit surprising seeing a mammal on what is suppsoed to be a fish world? Well turns out that's also how the beings felt! One being named Jerry ended up releasing the Ganges River Dolphin stock instead of the Speartooth shark! However these dolphins quickly outsmarted them, being impossible to elimnate. So the beings left them there, to evolve as well. An imposter AMONG US
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Common Plecostumus (Hypostomus plecostomus)
Reason:
A beast of destructive hunger was needed, to move and rake up the soil forming new habitats. There's only a few fish that would fit the description, one of them being the common plecostumus. Their large sizes and thick armor help them fend off predators, yet may also select for stronger and smarter predators.
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Threespot Gourami (Trichopodus trichopterus)
Reason: Air breating fishes are an oddity, as fish are famous for breathing water. However this piqued the curiosity of the beings. Their semi-prehensile feelers also caught their attention, potentially seeing what could arise from these strange marsh dwelling organisms.
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Speartooth Shark (Glyphis glyphis)
Reason:
Various species of arthropods introduced that:
Great Darner Dragonfly (Anax junius)
Various species of amphipods, copepods, and daphnias
Various species of molluscs introduced are:
Island Apple Snail (Pomacea canalicuta)
Various species of assassin snails
Various species of cnidrians introduced are:
Peach Blossom Jellyfish (Craspedacusta sowerbii)
Various species of bryozoans are:
Magnificient Bryzoans (Pectinatella magnifica)
Various species of terrestrial flowering plants are:
Asian rice (Oryza sativa)
Various species of aquatic flowering plants are:
Various species of anubias
Various species of camboba
Various species of elodea
Various species of hairgrass
Various species of aquatic non-vascular plants are:
Various species of ferns
Various species of mosses
Various species of lichens
Various species of microbes are:
Various species of decomposing microbes
Various species of infectious microbes
Various species of nitrogen-fixing microbes
Various species of denitrogen-ficating microbes