Mary Allen
Ngati mukufuna chidwi chapadera mu aquarium, muyenera kuganizira za nkhanu. Ndi zolengedwa zochititsa chidwi zimene zimabwera m’mitundu yosiyanasiyana ya zamoyo ndipo zambiri mwa izo sizikudziwika. Pano tikukudziwitsani za nkhono ndikukupatsani chidziwitso cha dziko losangalatsa la nkhanu.
General
Nkhanu (“Brachyura”) zimapanga mitundu yochuluka kwambiri ya zamoyo mu decipod ndi mitundu yoposa 5000. Ambiri a iwo amakhala m’nyanja, ena apanganso madzi opanda mchere kukhala kwawo kapena anasamukira kumtunda n’kungobweranso m’madzi kuti abereke. Ndizofanana kwa iwo kuti mimba imapindika pansi pa zida zamutu. M’kati mwa thupi lawo, ali ndi timiyendo ting’onoting’ono totsatizana tomwe timathandiza kunyamula mazira ndi kuwalola kupuma.
Odya Algae Kuchokera ku Caribbean
Nkhanu yobiriwira ya emeraldo (“Mithraculus sculptus”) imatha kufika m'lifupi mwake mpaka pafupifupi masentimita sikisi ndipo ndi chithunzi chobiriwira cha nkhanu. Ndi yabwino kwa Aquarium chifukwa choyamba imadya algae osafunikira komanso imakhalanso masana. Ndizosavuta kuziwona komanso zimasunga aquarium yoyera.
Nkhanu yotchedwa Sally light-foot imachokeranso ku Caribbean. Ndi iye, dzinali likunena zonse, chifukwa nkhanu yothamangayi imathamanga m'madzi tsiku lonse komanso imadyetsera ndere. Koma imathanso kutuluka m'madzi kwakanthawi kochepa: Ngati aquarium sinaphimbidwe bwino, imatha kuphulika. Kuyang'ana kumakhala kosangalatsa kwambiri chifukwa ili ndi thupi lathyathyathya modabwitsa ndipo imatha kufika m'lifupi mwake mpaka 12 cm.
M'malo Osadziwika Zitsanzo
Nkhanu za Boxer ("Lybis tesselata") ndi nkhanu zazing'ono zodabwitsa. Nyamazi, zomwe sizimapitirira masentimita awiri, zimanyamula anemones awiri ang'onoang'ono kuchokera kumtundu wa Triactis. Izi zimagwiritsidwa ntchito podzitchinjiriza kwa omwe angawawukire: nkhanu imatambasula anemones ake kwa mdani wake ngati magolovesi ankhonya. Anemones ndi omata kwambiri, choncho amagwiritsidwanso ntchito kupeza chakudya chawo. Akamasungunula, nkhanu ya boxer imayika tinthu tating'onoting'ono tomwe timatulutsa timadzi tambirimbiri tomwe timabisalamo n'kuitenganso ikatha kusungunula.
Nkhanu za porcelain zimawerengedwa pakati pa nkhanu zapakati ndipo mwasayansi si nkhanu "zenizeni". Nyama zamasiku onsewa nthawi zambiri zimasungidwa pawiri ndipo zimafika kukula kwa thupi mozungulira ma centimita atatu. Amakonda kugawana anemone ndi nsomba ziwiri za clown. Nkhanu zimakhala pansi pa anemone, clownfish imakhala pamwamba. Kukhalira limodzi kumeneku pakati pa nkhanu sikubweretsa ubwino kapena kuipa kwa mnzakeyo motero kumatchedwa carpose kapena probiosis.
Mosiyana ndi zimenezi, nkhanu zamtundu wa Trapezia zimakhala pakati pa nthambi zolimba kwambiri. Nkhanu zazing'onozi zimatetezedwa ndi matanthwewa. Makorali amenewa amatulutsa ntchofu ndi zakudya zotsala, zimene nkhanu za m’nyanjazi zimadya monga chakudya. Zotsatira zake, nkhanuzo zimachotsa majeremusi m'makorale.
Zochokera Padziko Lonse Lapansi
Nkhanu ya sitiroberi nthawi zambiri imatumizidwa kuchokera ku Hawaii ndipo nthawi zambiri imakhala kudera la Indo-Pacific. Imakula mpaka 5 cm ndipo ndiyokwera mtengo m'masitolo apadera. Nkhanu yokongola, yapinki ndi yamanyazi kwambiri ndipo imathera nthawi yambiri pansi pa miyala. Simatuluka nthawi zambiri masana ndipo, chifukwa chake, ndi yabwino kwambiri pamadzi am'madzi a nano. Poyisunga, ziyenera kudziwidwa kuti siziyenera kusungidwa pamodzi ndi adani, apo ayi, nkhanu yopanda chitetezo idzakhala nyama yokha.
Mtundu wina wa akatswiri a panyanja ungakhale nkhanu yamzukwa. Mutha kuwazindikira ndi kutalika kwa miyendo mpaka 30 cm. Imakhala tsiku lililonse ndipo imatengedwa kuti ndi yamtendere. Kuonjezera apo, imasaka nyongolotsi zomwe sizimakonda kwambiri ndipo zimatchulidwa ngati zamoyo zopindulitsa zomwe zimalepheretsa mphutsi za bristle kuti zisachulukane.
Nkhanu zaubweya nthawi zambiri zimalowa m'madzi mosadziwa, chifukwa nthawi zina zimabisika m'miyala "yamoyo" yomwe idagulidwa kuti ikhale yokongoletsa. Amamanga mapanga m’miyala yoteroyo ndipo akakhala ang’onoang’ono nthawi zambiri amawanyalanyaza. Maonekedwe awo amatha kufotokozedwa ngati "ubweya" ndipo nthawi zambiri sungadziwe komwe kutsogolo ndi kumbuyo kuli. Komabe, mukawapatsa chakudya, zimasintha mwachangu. Ndi zolengedwa zosangalatsa kwambiri poyang'anitsitsa ndi chisamaliro.
Nkhanu yomaliza yomwe yatchulidwa ndi yodabwitsa kwambiri mwa onse: nkhanu yamzimu. Poyamba idatumizidwa kuchokera ku Philippines (Cebu Island) ndipo imakhala kumeneko pa dothi lamchenga lomwe limapita kukuya kwa 1000 metres. Amadyetsa mitundu yonse ya zinthu zachilengedwe. Mu Aquarium, nkhanu ya mzukwa imakwiriridwa mumchenga wa coral nthawi zambiri. Nthawi zambiri mumangowona mutu wake ndi tinyanga, ena onse amakwiriridwa mumchenga ndi miyendo yake.